Big congratulations are in order for Girls Aloud's Nadine Coyle, who has revealed she is pregnant with her first child.

The singer announced the news on Instagram, posting a snap of herself with the words 'I'm having a baby' underneath.

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Nadine posted this picture on Instagram to announce her news

As Nadine has kept quiet about her love life in recent years, the identity of her baby daddy has not been confirmed, but it was rumoured she had reunited with her ex-fiancé, American footballer Jason Bell, back in March.

The pair's relationship ended after a year's engagement in June 2011.

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Nadine with Jason back in 2008

Nadine will be the first of her former Girls Aloud bandmates to become a mum.

The band - Nadine, Cheryl Cole, Kimberley Walsh, Sarah Harding and Nicola Roberts - recently reunited for a 10-year celebration tour but split after their final concert in March.

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  • Popstars The Rivals girl band

    Popstars - The Rivals winners, Girls Aloud, from left to right; Nicola Roberts, 17, Nadine Coyle, 17, Sarah Harding, 20, Cheryl Tweedy, 19, and Kimberley Walsh, 20, pose for photographers in front of their poster in east London. * 11/01/03 Girls Aloud singer Cheryl Tweedy, 19, who was arrested, after an alleged attack in a nightclub, police said. Tweedy, with the all-girl group currently at number one in the charts, is accused of punching law student Sophie Amogbokpa, 39, who was working as a toilet attendant at a nightspot known as The Drink in Guildford, Surrey.

  • Girls Aloud on MTV TRL UK

    Pop band Girls Aloud during their guest appearance on MTV's TRL UK at the MTV Studios in Camden, north London.

  • BRIT Awards 2009 - Arrivals - London

    Girls Aloud arriving for the BRIT Awards, at Earls Court, central London, SW5.

  • Popstars Girls - Smash Hits

    (left-right) Nicola Roberts, Javine Hylton, Cheryl Tweedy, Kimberley Walsh, Sarah Harding and Nadine Coyle the remaing girls from Popstars : the Rivals at the Smash Hits T4 Poll Winners Party at the London Arena.

  • Girls Aloud open the Harrods Christmas Grotto

    Girls Aloud open the Harrods Christmas Grotto, accompanied by Mohamed Al Fayed.Picture: UK Press

  • SHOWBIZ Aloud

    (L-R) Sarah, Kimberley, Nadine, Cheryl and Nicola from Girls Aloud performing onstage at G.A.Y from the Astoria, central London, during a concert to launch their new album 'Chemistry', Saturday December 3 2005. PRESS ASSOCIATION Photo. Photo credit should read: Steve Parsons/PA

  • St Trinian's World Premiere - Arrivals - London

    Nadine Coyle, Nicola Roberts, Kimberley Walsh, Sarah Harding and Cheryl Cole of Girls Aloud arrive at the premiere of St Trinian's at The Empire, Leicester Square, London

  • The Music Industry Trusts' Award 2008 - London

    Girls Aloud arrive at the Music Industry Trusts' Award 2008 at the Grosvenor Hotel, Park Lane in central London.

  • Girls Aloud MTV's TRL - Total Request Live - show

    Kimberley Walsh and Cheryl Tweedy from Girls Aloud during their guest appearance on MTV's TRL - Total Request Live - show, at the new studios in Leicester Square, central London.

  • MTV TRL

    (from left to right) Nadine Coyle, Sarah Harding, Cheryl Tweedy, Kimberley Walsh and Nicola Roberts from pop group Girls Aloud during their guest appearance on MTV's TRL - Total Request Live - show, at the new studios in Leicester Square, central London

  • THE 'FREAKY FRIDAY' PREMIERE IN LONDON

    GIRLS ALOUD ATTEND THE 'FREAKY FRIDAY' PREMIERE IN LONDON.PICTURE: UK PRESS

  • Red Cross Ball - London

    (From left to right) Cheryl Cole, Kimberley Stewart and Kimberley Walsh arrive for the Red Cross Ball at The Room by the River in south London.

  • BBC Radio 1 Chart Show Live

    Girls Aloud at the The BBC Radio 1 Chart Show Live, which is being held at the Brighton Dome, Brighton.

  • Children in Need 2008 - London

    Girls Aloud are joined on stage by Terry Wogan and Fearne Cotton, centre, during the filming of the BBC's Children in Need Appeal 2008 at BBC Television Centre, in central London.

  • Summer XS - Girls Aloud

    Girls Aloud perform on stage during the Summer XS Concert at the Rivermead Leisure complex in Reading.

  • Girls Aloud - Disney Channel Kids Awards - 2004

    Girls Aloud onstage during the Disney Channel Kids Awards 2004, held at the Royal Albert Hall, central London.

  • The Daily Mirror's Pride of Britain Awards 2009 - London

    Kimberley Walsh, Nicola Roberts and Cheryl Cole of Girls Aloud arriving for the Daily Mirror's Pride Of Britain Awards 2009 at the Grosvenor House Hotel in central London.

  • Girls Aloud Capital FM presents 02

    (L to R) Sarah Harding, Nicola Roberts, Nadine Coyle and Kimberley Walsh from Pop Stars - The Rivals winners Girls Aloud performs at Capital FM presents O2 in the city at Greenwich, London. The fifth member of the band Cheryl Tweedy was unable to attend due to an illness.

  • girls aloud 004-

    Girls Aloud performing live in Dublin for Dublin Radio Station 98FM.Mark Doyle/allactiondigital.com

  • girls aloud 09-

    Girls Aloud at Landsdowne Road in Dublin where they were supporting Westlife.

  • V Festival 2006

    Girls Aloud perform during the V Festival In Hylands Park, Chelmsford on Saturday August 19, 2006. Photo by Zak Hussein/EMPICS Entertainment

  • BRIT Awards 2009 - Show - London

    Girls Aloud collect their award for British Single on stage, during the BRIT Awards, at Earls Court, central London, SW5.

  • BRIT Awards 2009 - Show - London

    Girls Aloud perform on stage, during the BRIT Awards, at Earls Court, central London, SW5.

  • BRIT Awards 2009 - Show - London

    Girls Aloud collect their Best Single Award on stage at the Brit Awards 2009 held at Earls Court on February 18, 2009 in London.

  • BRIT Awards 2009 - Press Room - London

    Girls Aloud with the Best British Single award during the BRIT Awards, at Earls Court, central London, SW5.

  • Girls Aloud Launch The Dogs Trust Education Initiative - Uxbridge

    Girls Aloud launch the Dogs Trust Education Initiative, with Nintendo, at The Dog's Trust in Uxbridge, London.

  • Girls Aloud - HMV Oxford Street

    (From left to right) Kimberley Walsh, Nadine Coyle, Sarah Harding, Cheryl Tweedy and Nicola Roberts from Girls Aloud during an in store appearance at HMV music store in Oxford Street

  • Capital Awards 2008 - London

    Sarah Harding, Nicola Roberts and Kimberley Walsh arriving for the Capital Awards 2008 at Riverbank Plaza Hotel, London.

  • V Festival 2008 - Essex

    (L - R) Nadine Coyle, Cheryl Cole, Nicola Roberts, Sarah Harding and Kimberley Walsh of Girls Alouds perform on the second day of the V Festival at Hylands Park, Chelmsford, Essex.

  • Girls Aloud launch new KitKat Senses bar - London

    Girls Aloud launch the new 'KitKat Senses' bar at the Soho Hotel in central London.

  • St Trinian's World Premiere - Arrivals - London

    Nadine Coyle, Nicola Roberts, Kimberley Walsh, Sarah Harding and Cheryl Cole of Girls Aloud arrive at the premiere of St Trinian's at The Empire, Leicester Square, London

  • Girls Aloud launch MusicStation download service - London

    (From left to right) Nadine Coyle, Kimberley Walsh, Nicola Roberts, Sarah Harding and Cheryl Cole of Girls Aloud join Phones 4u, Omnifone and Vodafone to celebrate the imminent launch of MusicStation - the unlimited music download service available exclusively on Vodafone, at Cafe Royal in central London.

  • Girls Aloud Samsung Launch - London

    Girls Aloud (left-right) Kimberley Walsh, Nicola Roberts, Nadine Coyle, Sarah Harding and Cheryl Cole at the launch of the Samsung F210 Purple phone, at Phones 4U on Oxford Street, central London.

  • Girls Aloud launch a sponsorship deal with Sunsilk

    Girls Aloud launch a multi million pound sponsorship deal with Sunsilk in London.Picture: UK Press

  • 2006 Pride of Britain Awards

    Girls Aloud attend the Pride of Britain Awards 2006 at the London Television Studios.Picture: UK Press

  • Q Awards 2006

    Girls Aloud attend the 2006 Q Awards at London's Grosvenor House Hotel.Picture: UK Press

  • Alien Autopsy UK Premiere

    Kimberley Walsh & Cheryl Tweedy attend the 'Alien Autopsy' Premiere at the Odeon cinema in London's Leicester Square.Picture: UK Press

  • THE 2003 TMF AWARDS

    GIRLS ALOUD ATTEND THE TMF AWARDS IN ROTTERDAM, HOLLAND.PICTURE: UK PRESS

  • 'THE PRINCE'S POLO CONCERT' IN WINDSOR

    GIRLS ALOUD PERFORM IN 'THE PRINCE'S POLO CONCERT' AT THE ROYAL COUNTY OF BERKSHIRE POLO CLUB, WINDSOR.PICTURE: UK PRESS

  • Girls Aloud perform at the Kent Music Festival at Port Lypne Wild Animal Park

    Girls Aloud perform at the Kent Music Festival at Port Lypne Wild Animal Park.Picture: UK Press

  • 2005 Capital FM Capital Awards

    Girls Aloud attend the Capital FM Capital Awards at London's Royal Lancaster Hotel.Picture: UK Press

  • Brit Awards 2005

    Girls Aloud attend the 2005 Brit Awards at London's Earls Court.Picture: UK Press

  • 2003 NATIONAL MUSIC AWARDS

    GIRLS ALOUD ATTEND THE NATIONAL MUSIC AWARDS IN LONDON.PICTURE: UK PRESS

  • 'LOVE ACTUALLY' LONDON PREMIERE

    GIRLS ALOUD ATTEND THE 'LOVE ACTUALLY' PREMIERE IN LONDON.PICTURE: UK PRESS

  • Glamour Women of the Year Awards

    Girls Aloud attend the Glamour Magazine Women of the Year Awards in London's Berkeley Square Gardens.Picture: UK Press

  • Disney Channel Kids Awards

    Girls Aloud at the Disney Channel Kids Awards at London's Royal Albert Hall.Picture: UK Press/Disney

  • Girls Aloud at Studio Disney

    Girls Aloud warm-up for their performace at the forthcoming Disney Channel Kids Awards at Studio Disney.Picture: UK Press/Disney

  • Concert to launch the 26th Bristol International Balloon Fiesta

    Girls Aloud perform at a concert to launch the 26th annual Bristol International Balloon Fiesta.Picture: UK Press

  • SCOTLAND Girls

    (left-right) Sarah Harding, Nadine Coyle, Kimberley Walsh, Nicola Roberts and Cheryl Tweedy from pop group Girls Aloud at the opening of the new HMV store in the Mercat Centre Kirkcaldy, Scotland, Tuesday December 6, 2005. PRESS ASSOCIATION PHOTO. Photo credit should read: Danny Lawson/PA.

  • Popstars the Rivals girl band

    Popstars - The Rivals winners, Girls Aloud from left to right; Nicola Roberts, 17, Nadine Coyle, 17, Sarah Harding, 20, Cheryl Tweedy, 19, and Kimberley Walsh, 20, pose for photographers in front of their poster in east London.

  • Girls Aloud film The Friday Night Project

    Kimberley Walsh (front left), Sarah Harding (back) and Cheryl Tweedy from Girls Aloud join Justin Lee Collins (centre) and Alan Carr in the studio, during a sketch for the final episode of The Friday Night Project, at the Olympic Studios in Barnes, London.

Nadine suggested she wanted to continue with the girl group, tweeting: "You should know by now I had no part in any of this split business. I couldn't stop them. I had the best time & want to keep going."

The singer released her last solo album, 'Insatiable', in 2010, but it only peaked at number 47 in the UK charts.

She revealed earlier this year that she was working on new solo music.

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  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Rebecca Ferguson <strong>Who's the daddy?</strong> Her non-famous boyfriend of over a year <strong>Baby ETA: </strong> Later in 2014 <strong>Interesting fact:</strong> Rebecca announced her pregnancy after fans worried for her health when she collapsed during a performance on 'Loose Women'

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Natasha Hamilton <strong>Who's the daddy?</strong> Ritchie Neville <strong>Baby ETA: </strong> Late 2014 <strong>Interesting fact:</strong> It's the first 'Big Reunion' baby - Natasha is a singer in Atomic Kitten, while Ritchie is a member of boyband 5ive

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Christina Aguilera <strong>Who's the daddy?</strong> Matt Rutler <strong>Baby ETA: </strong> Later this year <strong>Interesting fact:</strong> Christina revealed she was having a baby girl during a concert in Malaysia

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Erin O'Connor <strong>Who's the daddy?</strong> Undisclosed <strong>Baby ETA: </strong> Later this year <strong>Interesting fact:</strong> The fashion model hasn't revealed the father of her baby, but told You magazine he is "funny and interesting and wears a suit every day to work".

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Holly Willoughby <strong>Who's the daddy?</strong> Her husband, Dan Baldwin <strong>Baby ETA: </strong> Late 2014 <strong>Interesting fact:</strong> This will be the 'This Morning' presenter's third child, she announced the pregnancy on her official website

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Kimberley Walsh <strong>Who's the daddy?</strong> Justin Scott <strong>Baby ETA: </strong> Late 2014 <strong>Interesting fact:</strong> Kimberley broke the news on Twitter, just weeks after the birth of her Girls Aloud bandmate Nadine Coyle gave birth to her first baby.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Drew Barrymore <strong>Who's the daddy?</strong> Will Kopelman <strong>Baby ETA: </strong> Mid 2014 <strong>Interesting fact:</strong> It's the couple's second child, after Drew gave birth to daughter Olive in 2012.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Olivia Wilde <strong>Who's the daddy?</strong> Jason Sudeikis <strong>Baby ETA: </strong> May 2014 <strong>Interesting fact:</strong> This is Olivia and Jason's first child, they've been engaged since 2013.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Billie Faiers <strong>Who's the daddy?</strong> Greg Shepherd <strong>Baby ETA: </strong> June 2014 <strong>Interesting fact:</strong> Billie revealed the sex of her baby in an episode of 'TOWIE' by cutting into a cake to reveal pink icing.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Scarlett Johansson <strong>Who's the daddy?</strong> Romain Dauriac <strong>Baby ETA: </strong> July 2014 <strong>Interesting fact:</strong> Scarlett is yet to confirm her pregnancy, but reports in People magazine claim the star was five months pregnant when she arrived at the 2014 Oscars.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Kelly Clarkson <strong>Who's the daddy?</strong> Brandon Blackstock <strong>Baby ETA: </strong> June 2014 <strong>Interesting fact:</strong> This is the American Idol winner's first child. She married her husband in October 2013, marking the occasion with the release of a one-off single, 'Tie It Up'.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Kerry Washington <strong>Who's the daddy?</strong> Nnamdi Asomugha <strong>Baby ETA: </strong> Mid 2014 <strong>Interesting fact:</strong> This is the first child for the stylish 'Scandal' actress

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Ciara <strong>Who's the daddy?</strong> Future <strong>Baby ETA: </strong> Later this year <strong>Interesting fact:</strong> The couple got engaged in October 2013. Future proposed with a fifteen carat diamond ring.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Lil Kim <strong>Baby ETA: </strong> Mid 2014 <strong>Interesting fact:</strong> Lil Kim managed to keep her pregnancy a secret until she surprised everyone by arriving at a New York Fashion Week show proudly displaying her baby bump.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Jessica Ennis-Hill <strong>Who's the daddy?</strong> Andy Hill <strong>Baby ETA: </strong> Late 2014 <strong>Interesting fact:</strong> The Olympian was forced to withdraw from the 2014 Commonwealth Games after discovering she was expecting a baby with her husband.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Ginnifer Goodwin <strong>Who's the daddy?</strong> Josh Dallas <strong>Baby ETA: </strong> Late 2014 <strong>Interesting fact:</strong> Ginnifer and her fiancé play Snow White and Prince Charming in the TV series Once Upon A Time.

  • Pregnant Celebs

    <strong>Who's the mumma?</strong> Sam Bailey <strong>Who's the daddy?</strong> Craig Pearson <strong>Baby ETA: </strong> October 2014 <strong>Interesting fact:</strong> The 'X Factor' winner postponed her first ever headline tour when she found out she was expecting her third child

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