Aaron Carter is ripped!

The 22-year-old singer and ex Dancing With the Stars contestant posted a series of defined muscle pics on Twitter Saturday, igniting a buzz over his buff new bod.

"I've been at [manager] Johnny Wright's compound working on my mind, music, and body for a new album release!" Carter Tweeted, along with a shirtless image of him flexing.

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Is Aaron Carter's Muscular Bod Sexy or Scary?

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Is Aaron Carter's Muscular Bod Sexy or Scary?