A happy couple's got a kid!

Britain's Got Talent judge David Walliams and model Lara Stone have given birth to their first child, according to Us Weekly.

The couple has yet to reveal publicly comment on the baby's gender, although Vogue UK is reporting that it's a boy.

"This has been the best day of their lives," a source says.

It sounds like even a certain cantakerous TV judge is happy for the couple, as Simon Cowell sent them a huge bouquet of blue and white flowers to congratulate them.

"Someone always has to show off and send the biggest bouquet," David tweeted about the gift. "Thank you, Simon Cowell."

David, 41, and Lara, 29, got hitched in May 2010.

David is a British comedian who is also known for the sketch show, Little Britain. 

Lara is a Dutch model who landed at number 8 on Forbes magazine's list of 2012's highest-earning models. Not too shabby.

The couple has been thrilled about having a baby ever since announcing the news last year.

"Some wonderful news," David tweeted at the time. "My beautiful wife Lara is pregnant. We are having a baby! It is due next year and we both couldn't be happier."

Congrats to the happy family!

Source: Us WeeklyVogue UK