NEW YORK (AP) -- It's Justin Timberlake's birthday, but it's another birth date that's on his mind - that of his future son or daughter.
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."
The sex of the baby is not yet known; the actor-singer joked that the couple is taking bets.
The Grammy-winning Timberlake married Biel in 2012. It will be the first child for both. Biel's pregnancy has been rumored for weeks but Timberlake's post is the first official confirmation.