WENN / Retna Digital 1 / 11
WENN / Retna Digital 1 / 11

During his stint on "Celebrity Apprentice" in January, Clay Aiken looked noticeably different than he did during his heyday in 2003 as the runner-up on Season 2 of "American Idol" -- and it turns out it wasn't just the passage of time.

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The singer, 33, admitted to Andy Cohen on Tuesday's "Watch What Happens Live" that he did, indeed, undergo plastic surgery.

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 "I had operative surgery on my jaw for a TMJ thing and I had them suck the fat out of my chin while they were in there," Aiken revealed on live TV, without specifying exactly when the procedure took place. "I was like, 'You know what, while I'm already down, go ahead and take the vacuum in there and suck the fat out of my chin."

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Aiken, who came out as gay in September 2008, has a son, Parker, 3. His next album, "Steadfast," is due out later this year.

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