Justin Timberlake confirms wife Jessica Biel is pregnant

Justin Timberlake celebrated his birthday by sharing some big news with the world -- confirming he and wife Jessica Biel are expecting their first child.

The singer took to Instagram on Saturday (his 34th birthday) and posted a photo of him kissing Biel's pregnant belly.

"Thank you EVERYONE for the Bday wishes! This year, I'm getting the GREATEST GIFT EVER. CAN'T WAIT.#BoyOrGirl #YouNeverKnow #WeDontEvenKnow#WeAreTakingBets," he captioned the snapshot.

It was rumored for months that the singer and actress were expecting, but the pair stayed had tight-lipped on the subject until now.

This is be the first child for Timberlake and Biel, 32, who married in Italy in 2012.