Michael Phelps Announces Fiancée Is Pregnant, Reveals Gender of Baby

— -- Michael Phelps and his fiancee are expecting a baby boy.

The Olympic swimmer announced the news on Instagram today, posting a photo of Phelps, 30, posing behind fiancee Nicole Johnson with his arms wrapped around Johnson's stomach.

"We found out 8 weeks ago we were expecting," Phelps wrote. "Today we're over 12 weeks and it looks like we're having a boy!!!"

The 22-time Olympic medalist proposed to Johnson last February.