Former child performer and teen heartthrob posted a photo of him on his Twitter account over the weekend showing his flexed muscles and six pack. Now 22 years old, the singer also said he is working on a new album.

The younger brother of boyband member, Nick Carter, Aaron was a pop singer in the late 90′s and was a favorite among pre-teen audience. His songs used to be featured as part of the soundtrack of other kid movies like Jimmy Neutron and Rugrats. He has also launched an acting career after his success in the music business. He has appeared in shows like 7th Heaven and Sabrina The Teenage Witch.

Shortly afterwards, he also dabbled in Broadway productions and the film, Fat Albert. The singer actor used to be linked to Hillary Duff and Lindsay Lohan.