Multi-award winning singer and actor Justin Timberlake officially confirmed he and wife Jessica Biel are adding another member to their family!

Former 'NSync member and solo artist Justin Timberlake took to Instagram to announce he and Biel are expecting their first baby, according to Arab News. The announcement was made Saturday coinciding with Timberlake's 34th birthday.

Timberlake posted a picture of him kissing his wife's pregnant belly.

Below the picture, Timberlake wrote: "Thank you EVERYONE for the Bday wishes! This year, I'm getting the GREATEST GIFT EVER. CAN'T WAIT. #BoyorGirl #YouNeverKnow #WeDontEvenKnow #WeAreTakingBets."

Timberlake's former bandmate Joey Fatone told InTouch Magazine that he received news of the couple's pregnancy way before the official announcement.

In the interview, Fatone said, "He told me a while ago, and I kept my mouth shut. But now I can talk about it. Jessica is awesome, and Justin is a kid at heart. They'll have fun."

Timberlake and Biel have been together since 2007 before getting married on Oct. 19, 2012 in Italy, according to ABC News. The couple had just recently celebrated their two-year anniversary by vacationing in New Zealand.

Two weeks prior to the announcement of the pregnancy, Timberlake posted a picture of him and his wife with the caption: "Life moves pretty fast. If you don't stop and look around once in a while, you could miss it.' -- Ferris."

Timberlake is currently rumored to appear on "Saturday Night Live's" 40th anniversary special.

In an ad that aired during the Jan. 31 episode of the show, and set to air again during the Super Bowl, Timberlake's name is mentioned along with 17 other former hosts, musical guests and former cast members, according to Entertainment Weekly.

The "Saturday Night Live" special is set to air at 8 p.m. on Feb. 15 on NBC.