It is a HUGE day for fans of One Direction, as today marks the world premiere of the boys' much anticipated film, 'This Is Us'.

Harry Styles, Louis Tomlinson, Zayn Malik, Niall Horan and Liam Payne will all be walking the red carpet in London's Leicester Square later this evening as their film debut receives its first official screening.

PICTURES: One Direction cause hysteria at 'This Is It' world premiere

one direction

One Direction with the film's director Morgan Spurlock

But if you can't be in London to see the boys (or don't fancy battling your way through an expected crowd of 70,000 outside the cinema), we've got a live stream of all the red carpet action so you don't have to miss a thing!

The streaming from the event begins today at midday as fans begin to take over Leicester Square in anticipation.

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  • BRITAIN-ENTERTAINMENT-MUSIC-FILM-1D

    Fans of the British boyband One Direction wait for the premier of their feature film 'One Direction: This Is Us' in Leicester Square, central London, on August 20, 2013. The film, made by 'Super Size Me' director Morgan Spurlock, shows the group in concert at London's O2 Arena, along with fly-on-the-wall footage showing what life is like inside one of the world's biggest bands. AFP PHOTO / ANDREW COWIE (Photo credit should read ANDREW COWIE/AFP/Getty Images)

  • BRITAIN-ENTERTAINMENT-MUSIC-FILM-1D

    Fans wait for the arrival of the British boyband One Direction ahead of the world premier of their feature film 'One Direction: This Is Us' in Leicester Square, central London, on August 20, 2013. The film, made by 'Super Size Me' director Morgan Spurlock, shows the group in concert at London's O2 Arena, along with fly-on-the-wall footage showing what life is like inside one of the world's biggest bands. AFP PHOTO / ANDREW COWIE (Photo credit should read ANDREW COWIE/AFP/Getty Images)

  • BRITAIN-ENTERTAINMENT-MUSIC-FILM-1D

    Fans hold up dolls of the British boyband One Direction as their wait for their arrival ahead of the world premier of their feature film 'One Direction: This Is Us' in Leicester Square, central London, on August 20, 2013. The film, made by 'Super Size Me' director Morgan Spurlock, shows the group in concert at London's O2 Arena, along with fly-on-the-wall footage showing what life is like inside one of the world's biggest bands. AFP PHOTO / ANDREW COWIE (Photo credit should read ANDREW COWIE/AFP/Getty Images)

  • BRITAIN-ENTERTAINMENT-MUSIC-FILM-1D

    Fans wait for the arrival of the British boyband One Direction ahead of the world premier of their feature film 'One Direction: This Is Us' in Leicester Square, central London, on August 20, 2013. The film, made by 'Super Size Me' director Morgan Spurlock, shows the group in concert at London's O2 Arena, along with fly-on-the-wall footage showing what life is like inside one of the world's biggest bands. AFP PHOTO / ANDREW COWIE (Photo credit should read ANDREW COWIE/AFP/Getty Images)

  • BRITAIN-ENTERTAINMENT-MUSIC-FILM-1D

    Fans wait for the arrival of the British boyband One Direction ahead of the world premier of their feature film 'One Direction: This Is Us' in Leicester Square, central London, on August 20, 2013. The film, made by 'Super Size Me' director Morgan Spurlock, shows the group in concert at London's O2 Arena, along with fly-on-the-wall footage showing what life is like inside one of the world's biggest bands. AFP PHOTO / ANDREW COWIE (Photo credit should read ANDREW COWIE/AFP/Getty Images)

  • BRITAIN-ENTERTAINMENT-MUSIC-FILM-1D

    Fans wait for the arrival of the British boyband One Direction ahead of the world premier of their feature film 'One Direction: This Is Us' in Leicester Square, central London, on August 20, 2013. The film, made by 'Super Size Me' director Morgan Spurlock, shows the group in concert at London's O2 Arena, along with fly-on-the-wall footage showing what life is like inside one of the world's biggest bands. AFP PHOTO / ANDREW COWIE (Photo credit should read ANDREW COWIE/AFP/Getty Images)

  • Fans of group One direction, display messages for Harry Styles, ahead of the UK Premiere of One Direction: This Is Us, at a central London cinema, Tuesday, Aug. 20, 2013. (Photo by Jonathan Short/Invision/AP)

  • Fans of the group One direction, ahead of the UK Premiere of One Direction: This Is Us, at a central London cinema, Tuesday, Aug. 20, 2013. (Photo by Jonathan Short/Invision/AP)

  • Fans of group One direction, pose for a photo ahead of the UK Premiere of One Direction: This Is Us, at a central London cinema, Tuesday, Aug. 20, 2013. (Photo by Jonathan Short/Invision/AP)

  • Fans of the group One direction, ahead of the UK Premiere of One Direction: This Is Us, at a central London cinema, Tuesday, Aug. 20, 2013. (Photo by Jonathan Short/Invision/AP)

  • One Direction Fans Camp Out In Time For The Premiere 'This Is Us'

    LONDON, ENGLAND - AUGUST 20: One Direction fans gather in Leicester Square ahead of the premier for the bands new film 'This Is Us' on August 20, 2013 in London, England. (Photo by SAV/FilmMagic)

  • One Direction Fans Camp Out In Time For The Premiere 'This Is Us'

    LONDON, ENGLAND - AUGUST 20: One Direction fans arrive to take their positions in Leicester Square ahead of the premier for the bands new film 'This Is Us' on August 20, 2013 in London, England. (Photo by SAV/FilmMagic)

  • One Direction Fans Camp Out In Time For The Premiere 'This Is Us'

    LONDON, ENGLAND - AUGUST 20: One Direction fans arrive to take their positions in Leicester Square ahead of the premier for the bands new film 'This Is Us' on August 20, 2013 in London, England. (Photo by SAV/FilmMagic)

  • One Direction Fans Camp Out In Time For The Premiere 'This Is Us'

    LONDON, ENGLAND - AUGUST 20: One Direction fans arrive to take their positions in Leicester Square ahead of the premier for the bands new film 'This Is Us' on August 20, 2013 in London, England. (Photo by SAV/FilmMagic)

  • One Direction Fans Camp Out In Time For The Premiere 'This Is Us'

    LONDON, UNITED KINGDOM - AUGUST 20: John Sergeant interviews One Direction fans arriving in Leicester Square for the premier for the bands new film 'This Is Us' whilst filming The One Show from on August 20, 2013 in London, England. (Photo by SAV/FilmMagic)

  • One Direction Fans Camp Out In Time For The Premiere 'This Is Us'

    LONDON, ENGLAND - AUGUST 20: One Direction fans arrive to take their positions in Leicester Square ahead of the premier for the bands new film 'This Is Us' on August 20, 2013 in London, England. (Photo by SAV/FilmMagic)

  • One Direction Fans Camp Out In Time For The Premiere 'This Is Us'

    LONDON, UNITED KINGDOM - AUGUST 20: John Sergeant interviews One Direction fans arriving in Leicester Square for the premier for the bands new film 'This Is Us' whilst filming The One Show from on August 20, 2013 in London, England. (Photo by SAV/FilmMagic)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: A One Direction fan applies make up as fans take up their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans wait besides part of the set to take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans wait patiently to be let in to a secure area to take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans wave placards as they take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • Thousands Of One Direction Fans Take Over Leicester Square Before The Premiere Of This Is Us

    LONDON, ENGLAND - AUGUST 20: One Direction fans arrive to take their positions in Leicester Square ahead of the premier to the bands new film on August 20, 2013 in London, England. The bands new film, 'This Is Us', will premier this evening at the Empire cinema. (Photo by Dan Kitwood/Getty Images)

  • One Direction - This Is Us Fans

    Young girls some who have camped out since Sunday night, wake up in Leicester Square, central London waiting for this evening's premiere of the film One Direction: This Is Us in central London.

  • One Direction - This Is Us Fans

    Young girls some who have camped out since Sunday night, queue up for wristbands for entry to crowd controlled pens, outside the Empire Cinema in Leicester Square , central London waiting for this evening's premiere of the film One Direction: This Is Us in central London.

  • One Direction - This Is Us Fans

    Young girls some who have camped out since Sunday night, wake up in Leicester Square, central London waiting for this evening's premiere of the film One Direction: This Is Us in central London.

  • One Direction - This Is Us Fans

    Young girls some who have camped out since Sunday night, wake up in Leicester Square, central London waiting for this evening's premiere of the film One Direction: This Is Us in central London.

  • One Direction - This Is Us Fans

    Young girls some who have camped out since Sunday night, queue up for wristbands to be attached for entry to crowd controlled pens outside the Empire Cinema in Leicester Square, central London waiting for this evening's premiere of the film One Direction: This Is Us in central London.

  • One Direction - This Is Us Fans

    Young girls some who have camped out since Sunday night with their cases and bags, queue up for wristbands for entry to crowd controlled pens outside the Empire Cinema in Leicester Square, central London waiting for this evening's premiere of the film One Direction: This Is Us in central London.

  • This Is Us premiere - London

    One Direction fans Chloe Glasscoe 13, Lianne Kidd 15, Kelsey Smith 14 and Caitlin Derrick 12 who arrived last night in Leicester Square in London and have been camping to watch the band's arrivals of the premiere tomorrow of their film, This Is Us.

  • One Direction - This Is Us Fans

    Young girls some who have camped out since Sunday night, wake up in Leicester Square, central London waiting for this evening's premiere of the film One Direction: This Is Us in central London.

  • One Direction - This Is Us Fans

    Young girls some who have camped out since Sunday night, queue up for wristbands for entry to crowd controlled pens, outside the Empire Cinema in Leicester Square , central London waiting for this evening's premiere of the film One Direction: This Is Us in central London.

  • This Is Us premiere - London

    One Direction fans Chloe Glasscoe 13, Lianne Kidd 15, Kelsey Smith 14 and Caitlin Derrick 12 who arrived last night in Leicester Square in London and have been camping to watch the band's arrivals of the premiere tomorrow of their film, This Is Us.

  • This Is Us premiere - London

    One Direction fans Amelia Troughton-Smith, 17, Ashah Xhafa, 17, and Jessica Facey, 17, who arrived this morning at Leicester Square in London the band's arrivals of the premiere tomorrow of their film, This Is Us.

  • This Is Us premiere - London

    One Direction fans who arrived last night in Leicester Square in London and have been camping to watch the band's arrivals of the premiere tomorrow of their film, This Is Us.

  • This Is Us premiere - London

    One Direction fans who arrived last night in Leicester Square in London and have been camping to watch the band's arrivals of the premiere tomorrow of their film, This Is Us.

  • This Is Us premiere - London

    One Direction fans who arrived last night in Leicester Square in London and have been camping to watch the band's arrivals of the premiere tomorrow of their film, This Is Us.

Then from around 5pm, a whole host of stars including Marvin Humes, Rochelle Humes, Aston Merrygold, Oritsé Williams, James Corden, Dermot O'Leary, Little Mix, McFly, Diana Vickers, Amelia Lily, Conor Maynard and the Loveable Rogues will be arriving at the cinema, before the famous five-some take to the red carpet to greet fans, pose for photos and do a whole series of interviews.

We can barely contain our excitement!

Take a look at the photocall the boys held to promote the film yesterday in our gallery below...

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  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson, Niall Horan, Zayn Malik and Harry Styles of One Direction with Morgan Spurlock at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson and Niall Horan of One Direction at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles of One Direction with Morgan Spurlock at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson and Niall Horan of One Direction at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    Harry Styles of One Direction at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    Harry Styles of One Direction at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    Harry Styles of One Direction at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    Harry Styles of One Direction and Morgan Spurlock at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    Harry Styles of One Direction at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    Harry Styles of One Direction and Morgan Spurlock at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • This Is Us screening - London

    One Direction (left to right) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles with Morgan Spurlock are seen at a photocall to promote their new film This Is Us at the Sky Studios, London.

  • This Is Us screening - London

    One Direction (left to right) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles with Morgan Spurlock are seen at a photocall to promote their new film This Is Us at the Sky Studios, London.

  • This Is Us screening - London

    One Direction (left to right) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles with Morgan Spurlock are seen at a photocall to promote their new film This Is Us at the Sky Studios, London.

  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles of One Direction with Morgan Spurlock at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    Liam Payne and Harry Styles of One Direction with Morgan Spurlock at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • This Is Us screening - London

    One Direction (left to right) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles with Morgan Spurlock are seen at a photocall to promote their new film This Is Us at the Sky Studios, London.

  • This Is Us screening - London

    One Direction (left to right) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles with Morgan Spurlock are seen at a photocall to promote their new film This Is Us at the Sky Studios, London.

  • This Is Us screening - London

    One Direction (left to right) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles with Morgan Spurlock are seen at a photocall to promote their new film This Is Us at the Sky Studios, London.

  • This Is Us screening - London

    One Direction (left to right) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles are seen at a photocall to promote their new film This Is Us at the Sky Studios, London.

  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles of One Direction with Morgan Spurlock at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles of One Direction at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles of One Direction with Morgan Spurlock at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • One Direction - This Is Us Photocall

    (L-R) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles of One Direction at the This Is Us Photocall, Big Sky Studios, London.Photo Credit should read Doug Peters EMPICS Entertainment

  • This Is Us screening - London

    One Direction (left to right) Louis Tomlinson, Niall Horan, Zayn Malik, Liam Payne and Harry Styles are seen at a photocall to promote their new film This Is Us at the Sky Studios, London.

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