It's Justin Bieber's birthday on Friday, which means two things: Beliebers will send Twitter into meltdown with their frantic good wishes, and we felt obliged to recall some of the things the annoyingly popular star has achieved since becoming an 'adult' last year.

On the 'Baby' singer's 19th birthday, here are 19 facts, spats and rumours from the last 12 months in his crazy little life...

1. The pop sensation bought his first home, sealing the deal on a $6.5m mansion in the Californian suburb of Calabasas, where the Kardashian family also live. According to the Los Angeles Times, he laid down the large sum for a 10,000-square-foot home on 1.3 acres.

justin bieber

2. Bieber released his third studio album 'Believe' on 19 June, 2012, and it headed straight to number one in the US. As of May 2012, Bieber has sold 15 million albums. Following the success of Believe Acoustic, JB is now the first 19-year-old musician to have five #1 albums in music history.

3. He's taken full advantage of the large hotel suites he gets offered. Just this week in London, it was reported Bieber took UK model and singer Ella-Paige Roberts-Clarke back to his room along with two mystery girls. Presumably to play scrabble.

4. He's got some more ink on his skin. He recently brought his number of tattoos up to 12 after getting a fancy X (the Greek letter for Chi, representing Christ) on his arm.

5. He wore a gas mask out in public in London, reportedly to stop the public noticing him. Umm…

6. He was snapped groping a fan's boob. At least that's what it looked like, Justin's representative told E! News: "That definitely did not happen. He was pulling away from her. It's ridiculous."

justin bieber

7. Police foiled a plot to castrate and murder the teenage popstar at his Madison Square Garden show in November.

8. He became the King of Twitter after reaching the number one spot in the list of most-followed accounts, overtaking Lady Gaga.

9. Bieber and Selena Gomez reportedly split for a second time following a huge row over Christmas. Once the cutest couple in Hollywood, it now looks like their romance is over for good.

10. Life & Style claimed Bieber had an affair with Rihanna. Yes we know it sounds ridiculous, but it is also reportedly why Gomez split with the 'Beauty and a Beat' singer.

11. He was accused of animal cruelty after presenting a screaming fan with his pet hamster. The gifting took place after the singer’s performance at the Atlanta Jingle Ball show.

12. He was accused of assaulting a photographer. According to TMZ, eyewitnesses saw an altercation after the pap stood in front of Justin's car as he tried to pull away with then girlfriend Gomez.

13. After the success of Bieber's documentary 'Never Say Never', his mum is now making her own film. Pattie Mallette is producing a new anti-abortion documentary called 'Crossroads', which she hopes will raise $10m (£6.3m) for "crisis centres" that try to deter women from having abortions.

14. After photos of the star smoking weed in a hotel room with friends hit the web, the singer apologised for the incident in a 'Saturday Night Live' sketch.

15. He complained that he was "used" by producers of 'The X Factor USA' after helping LA Reid on the Judges' Houses section of the show. The teen idol tweeted: "Heard we got used for ratings according to twitter and we arent even on until tomorrow? @xfactorusa could of just told us."

16. Bieber's Ferrari was involved in a roadside incident that involved the death of a paparazzo.

justin bieber

17. The Grammys managed to upset him after they failed to nominate him for any awards. Bieber tried to get his own back by running a live stream at the same time as the ceremony was due to air, but it didn't work. His mum, Pattie Mallette, told Alexa Chung during a sit-down interview with FuseTV: "It's my boy, I'm a little biased. I just heard that he's now had five No. 1 albums, so I think his music is speaking for itself."

18. He made his first silver screen appearance in a feature film. By that we mean he appeared as an alien on some TV monitors in 'Men in Black 3'.

19. There was a case of mistaken identity. COEDMagazine.com revealed that the Bieber ranks number seven in the list of 50 most popular women on the web, according to Google searches.

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  • Justin Bieber performs on the street August 20, 2007 in Stratford, Canada. (Photo by Irving Shuter/Getty Images)

    Justin Bieber performs on the street August 20, 2007 in Stratford, Canada. (Photo by Irving Shuter/Getty Images)

  • Justin Bieber Visits The Nintendo World Store - September 1, 2009

    Justin Bieber visits the Nintendo World Store on September 1, 2009 in New York City.

  • Justin Bieber Performs On ABC's "Good Morning America"

    NEW YORK - NOVEMBER 15: Musician Justin Bieber performs on ABC's 'Good Morning America' at ABC News' Good Morning America Times Square Studio on November 15, 2009 in New York City. (Photo by Neilson Barnard/Getty Images)

  • Z100's Jingle Ball 2009 - Press Room

    NEW YORK - DECEMBER 11: Singer Justin Bieber attends Z100's Jingle Ball 2009 at Madison Square Garden on December 11, 2009 in New York City. (Photo by Jason Kempin/Getty Images)

  • KIIS FM's Wango Tango 2010 - Arrivals

    LOS ANGELES, CA - MAY 15: Justin Bieber arrives at KIIS FM's Wango Tango 2010 at the Staples Center on May 15, 2010 in Los Angeles, California. (Photo by Angela Weiss/Getty Images)

  • KIIS-FM Presents Justin Bieber At Nokia Plaza L.A. LIVE

    LOS ANGELES, CA - FEBRUARY 13: Singer Justin Bieber poses after his free performance presented by KIIS-FM at Nokia Plaza L.A. Live on February 13, 2010 in Los Angeles, California. (Photo by Angela Weiss/Getty Images)

  • Justin Bieber Signs Copies Of "First Step 2 Forever" - November 26, 2010

    NEW YORK - NOVEMBER 26: Justin Bieber promotes his new book 'First Step 2 Forever' at Barnes & Noble, 5th Avenue on November 26, 2010 in New York City. (Photo by Andy Kropa/Getty Images)

  • 68th Annual Golden Globe Awards - Arrivals

    BEVERLY HILLS, CA - JANUARY 16: Singer Justin Bieber arrives at the 68th Annual Golden Globe Awards held at The Beverly Hilton hotel on January 16, 2011 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)

  • Justin Bieber: Never Say Never - Inside Arrivals

    LONDON, ENGLAND - FEBRUARY 16: Justin Bieber attends the 'Justin Bieber: Never Say Never' premiere at the O2 Cineworld on February 16, 2011 in London, England. (Photo by Jon Furniss/WireImage)

  • 2011 Billboard Music Awards - Press Room

    LAS VEGAS, NV - MAY 22: Singer Justin Bieber poses in the press room with the Digital Artist of the Year award during the 2011 Billboard Music Awards at the MGM Grand Garden Arena May 22, 2011 in Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images)

  • 2011 CMT Music Awards - Audience And Backstage

    NASHVILLE, TN - JUNE 08: Singer Justin Bieber attends the 2011 CMT Music Awards at the Bridgestone Arena on June 8, 2011 in Nashville, Tennessee. (Photo by Kevin Mazur/WireImage)

  • BET Awards '11 - Arrivals

    LOS ANGELES, CA - JUNE 26: Musician Justin Bieber arrives at the BET Awards '11 held at the Shrine Auditorium on June 26, 2011 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

  • 2011 Teen Choice Awards - Arrivals

    UNIVERSAL CITY, CA - AUGUST 07: Singer Justin Bieber arrives at the 2011 Teen Choice Awards held at Gibson Amphitheatre on August 7, 2011 in Universal City, California. (Photo by Jon Kopaloff/FilmMagic)

  • 2011 MTV Video Music Awards - Arrivals

    LOS ANGELES, CA - AUGUST 28: Justin Bieber arrives at the 2011 MTV Video Music Awards at the Nokia Theatre L.A. Live on August 28, 2011 in Los Angeles, CA. (Photo by Gregg DeGuire/FilmMagic)

  • The 53rd Annual GRAMMY Awards - Arrivals

    LOS ANGELES, CA - FEBRUARY 13: Singer Justin Bieber arrives at The 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

  • Justin Bieber Lights The Empire State Building

    NEW YORK, NY - NOVEMBER 18: Justin Bieber poses on the observation deck at The Empire State Building on November 18, 2011 in New York City. (Photo by Cindy Ord/Getty Images)

  • "Justin Bieber: Never Say Never" - New York Premiere

    NEW YORK, NY - FEBRUARY 02: Justin Bieber attends the New York premiere of 'Justin Bieber: Never Say Never' at Regal E-Walk 13 on February 2, 2011 in New York City. (Photo by Michael Loccisano/Getty Images)

  • Dolce & Gabbana Celebrates Fashion's Night Out

    NEW YORK, NY - SEPTEMBER 08: Justin Bieber attends the Dolce & Gabbana Boutique on September 8, 2011 in New York City. (Photo by Eugene Gologursky/Getty Images for Dolce & Gabbana)

  • The 40th American Music Awards - Arrivals

    LOS ANGELES, CA - NOVEMBER 18: Singer Justin Bieber attends the 40th American Music Awards held at Nokia Theatre L.A. Live on November 18, 2012 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

  • 2012 Teen Choice Awards - Arrivals

    UNIVERSAL CITY, CA - JULY 22: Justin Bieber arrives at the 2012 Teen Choice Awards at Gibson Amphitheatre on July 22, 2012 in Universal City, California. (Photo by Steve Granitz/WireImage)

  • Teen Choice Awards 2012 - Show

    UNIVERSAL CITY, CA - JULY 22: Singer Justin Bieber accepts the Male Summer Music Star award onstage during the 2012 Teen Choice Awards at Gibson Amphitheatre on July 22, 2012 in Universal City, California. (Photo by Kevin Winter/Getty Images)

  • 2012 MuchMusic Video Awards - Show

    TORONTO, ON - JUNE 17: Justin Bieber perfoms at the 2012 MuchMusic Video Awards at MuchMusic HQ on June 17, 2012 in Toronto, Canada. (Photo by George Pimentel/WireImage)

  • 2012 Teen Choice Awards - Red Carpet

    UNIVERSAL CITY, CA - JULY 22: Singer Justin Bieber arrives at the 2012 Teen Choice Awards at Gibson Amphitheatre on July 22, 2012 in Universal City, California. (Photo by Kevin Mazur/WireImage)

  • 2012 Billboard Music Awards - Arrivals

    LAS VEGAS, NV - MAY 20: Justin Bieber arrives at the 2012 Billboard Music Awards at MGM Grand on May 20, 2012 in Las Vegas, Nevada. (Photo by Gregg DeGuire/WireImage)

  • 2012 MuchMusic Video Awards - Arrivals

    TORONTO, ON - JUNE 17: Justin Bieber and guest arrives at the 2012 MuchMusic Video Awards at MuchMusic HQ on June 17, 2012 in Toronto, Canada. (Photo by George Pimentel/WireImage)

  • 2012 Nickelodeon's Kids' Choice Awards - Show

    LOS ANGELES, CA - MARCH 31: Singer Justin Bieber onstage at the 2012 Nickelodeon's Kids' Choice Awards at Galen Center on March 31, 2012 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic)

  • NRJ Music Awards 2012 - Red Carpet Arrivals

    CANNES, FRANCE - JANUARY 28: Justin Bieber poses as he arrives at NRJ Music Awards 2012 at Palais des Festivals on January 28, 2012 in Cannes, France. (Photo by Pascal Le Segretain/Getty Images)

  • Justin Bieber performs at the O2

    DUBLIN, IRELAND - FEBRUARY 17: Justin Bieber performs at the O2 on February 17, 2013 in Dublin, Ireland. (Photo by Phillip Massey/WireImage)

  • Celebrity Sightings In London - February 19, 2013

    LONDON, UNITED KINGDOM - FEBRUARY 19: Justin Bieber sighting at Beat Club on February 19, 2013 in London, England. (Photo by Alan Chapman/FilmMagic)