Aaron Carter has a brand new look and he's almost unrecognizable from the pop star who made young girls swoon in the late 90s. Attempting a music comeback, Carter Tweeted an amazing picture of himself that you see here on RadarOnline.com.

PHOTOS: Actors Who Can Sing

Aaron, younger brother of Backstreet Boy Nick Carter, had a successful pop and hip hop career in his mid-teens and also made several acting appearances.

He went the reality route with an E! series about his family, competed on Dancing with the Stars in 2009, and was briefly a Lindsay Lohan boyfriend....and he weight-lifted through it all.

PHOTOS: Dancing Divas

But he wants to be at the top of the charts again and is working with the legendary manager/producer Johnny Wright -- he's Justin Timberlake's music manager -- on some new sounds.

Maksim Chmerkovskiy Trashes Aaron Carter

He Tweeted his muscle-bound pic with the note, "I've been at Johnny Wright's compound working on my mind, music and body for a new album release."

Related Stories:

VIDEO:  Aaron Carter Tells Lindsay Lohan: 'Sober Up'

Lindsay Lohan's Scandalous Life: From Aaron Carter To Samantha Ronson

VIDEO:  Aaron Carter Eliminated From DWTS