When Imogen Thomas announced her pregnancy yesterday, she certainly stole Adele's crown for Shock Celeb Pregnancy of 2012.

But while we're still picking up our jaw off the desk, Imogen has been getting on with pregnant life, stepping out for the first time since announcing the news.

imogen thomas

The Big Brother star - who is twelve weeks pregnant with boyfriend Adam Horsley - was already sporting a cute baby bump as she was spotted leaving her home in London.

imogen thomas

Imogen played it casual as she headed out, wearing a black t-shirt with a floral motif, black jogging bottoms and trainers.

And she was all smiles for the cameras as she climbed into her car, pushing out her belly.

imogen thomas

Imogen is expecting the arrival in January, and as she announced the happy news in yesterday's Sun On Sunday , she said: "I can't wait to be the best mum I possibly can be. I am so, so excited. Knowing my child is growing inside me is just mind-blowing."

imogen thomas

She echoed those sentiments when she thanked fans for their support on Twitter.

"So overwhelmed by all the lovely messages. Thank u so much every1. Very kind of u. I can't wait to be a mum ♥ xxx," she wrote.

> IN PICS: PREGNANT CELEBS

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  • <strong>Who's the mumma? </strong>Peaches Geldof <strong>Who's the daddy? </strong>Thomas Cohen <strong>Baby ETA: </strong>April 2013 <strong>Interesting fact: </strong>Peaches and Thomas are expecting a boy and are planning to name him Phaedra.

  • <strong>Who's the mumma? </strong>Fearne Cotton <strong>Who's the daddy? </strong>Jesse Wood <strong>Baby ETA: </strong>Late 2012 <strong>Interesting fact: </strong>Fearne had to deny she knew the sex of her baby when she referred to her bump as 'her'.

  • <strong>Who's the mumma? </strong>Imogen Thomas <strong>Who's the daddy? </strong>Adam Horsley <strong>Baby ETA: </strong>February 2013 <strong>Interesting fact: </strong>Imogen and her boyf had been dating 10 months when the star fell pregnant

  • <strong>Who's the mummy? </strong>Lily Allen <strong>Who's the daddy?</strong> Sam Cooper <strong>Baby ETA:</strong> December <strong>Interesting fact: </strong> For Lily, a source revealed, "work comes second to Sam, Ethel and now their bump. She's just so excited."

  • <strong>Who's the mummy?</strong> Sarah Michelle Gellar <strong>Who's the daddy? </strong> Freddie Prinze Jr <strong>Baby ETA:</strong> Autumn <strong>Interesting fact:</strong> The couple met on the set of <em>I Know What You Did Last Summer</em>. How - umm -romantic

  • <strong>Who's the mummy?</strong> Drew Barrymore <strong>Who's the daddy? </strong> Will Kopleman <strong>Baby ETA:</strong> She confirmed she was pregnant in June, but hasn't shared the due date <strong>Interesting fact: </strong> The couple married on 5 June, when Drew was pregnant. So that means the baby was present - aww

  • <strong>Who's the mummy?</strong> Melissa Joan Hart <strong>Who's the daddy? </strong> Mark Wilkerson <strong>Baby ETA:</strong> Unknown <strong>Interesting fact: </strong> This is the <em>Sabrina The Teenage Witch</em> star's third baby

  • <strong>Who's the mummy?</strong> Camila Alves <strong>Who's the daddy? </strong> Matthew McConaughey <strong>Baby ETA:</strong> They haven't given a due date yet, but as soon as we know you'll know <strong>Interesting fact:</strong> They have two children Levi, 3, and Vida, 2

  • <strong>Who's the mumma? </strong>Anne Hathaway <strong>Who's the daddy? </strong>Adam Shulman <strong>Baby ETA:</strong> Well, it's just rumours at the moment, so we can't be sure <strong>Interesting fact: </strong>Despite playing Catwoman in The Dark Knight Rises, it is highly unlikely that Anne will give birth to a litter

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