Birthday Boy Justin Timberlake Confirms Wife Jessica Biel Is Expecting, Shares Cutest (and Biggest) Baby Bump Photo

After plenty of speculation and a few visible baby bumps, the former ‘N Sync member finally confirmed the exciting baby news on his birthday Saturday."Thank you EVERYONE for the Bday wishes!," he captioned on Instagram. "This year, I'm getting the GREATEST GIFT EVER. CAN'T WAIT. #BoyOrGirl #YouNeverKnow #WeDontEvenKnow #WeAreTakingBets"

The news comes after a source told E! News that the 32-year-old beauty is at least five months along and has been "feeling really good" during her pregnancy.

In fact, the mom-to-be has been staying fit and healthy with a well-planned pregnancy diet and fitness routine.

Jessica Biel.