Aaron Carter "feels amazing" after gaining 45 lbs in weight.
The 29-year-old singer was recently re-admitted himself into a rehabilitation centre last month, and the musician has taken to social media to share his impressive weight gain in "two months", which has left him feeling better about himself and positive about the future.
The 'I Want Candy' hitmaker shared a before and after photograph of his changed appearance, on his Instagram account, which was captioned: "This is my before and after pics. I went from 115 to 160 pounds in two months I feel amazing. 2018 I'm ready for you!! (sic)"
And Aaron has revealed he has been focusing on his music career since checking into the medical centre and has teased he is working on new songs, which he hopes to release soon.
He said: "My new Music is on its way! (sic)."
And it has been reported on E! news Aaron's weight gain is due to a "special" protein-heavy diet programme he has been put on in rehab to help him gain more weight.
Aaron first entered rehab in September this year, but the left the site because "several legal and personal matters arose"
However he returned one week later and is "very much committed" to his plan and he aims to leave the facility as "the best possible person" he can be.
Aaron's representative said: "He is still very much committed to his wellness and will be continually working toward being the best possible person."
Aaron decided to enter rehab after he previously admitted he was "concerned" about his "overall health."
Speaking previously, he said: "I'm concerned about my overall health because people tell me I look like I have AIDs or I look like I have cancer or I look like I'm dying."