Justin Timberlake And Jessica Biel Announce They’re Having A Baby (PHOTO0

TORONTO – It may be Justin Timberlake’s birthday, but the singer and actor is far more excited about another birthday.

The superstar shared a picture of a bulging belly — presumably belonging to wife Jessica Biel — on Instagram on Saturday, his 34th birthday. He wrote that he was getting the greatest gift ever this year and added: “CAN’T WAIT.”

He said: “Thank you EVERYONE for the Bday wishes! This year, I’m getting the GREATEST GIFT EVER. CAN’T WAIT. #BoyOrGirl #YouNeverKnow #WeDontEvenKnow #WeAreTakingBets.”

The sex of the baby is not yet known; the actor-singer joked that the couple is taking bets.

There had been rumours that Jessica Biel was pregnant for weeks, but Timberlake’s post is the first official confirmation.

Timberlake’s ‘N Sync bandmate Joey Fatone appeared to reveal the baby news in December.

“He told me a while ago, and I kept my mouth shut,” Fatone told In Touch magazine.

“But now I can talk about it. Jessica is awesome, and Justin is a kid at heart. They’ll have fun.”

The Grammy-winning Timberlake married Biel in 2012. It will be the first child for both. Biel’s pregnancy has been rumoured for weeks but Timberlake’s post is the first official confirmation

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

A photo posted by Justin Timberlake (@justintimberlake) on Jan 31, 2015 at 3:29pm PST