MUMBAI: Selena Gomez is reportedly trying to lead a healthier lifestyle even though she is quite comfortable with her figure.

"She's trying her hardest to live a healthier lifestyle. She's surrounding herself with positive enforcers," a source close to the singer told usmagazine.com.

The 22-year-old singer, who sought treatment in rehab for an unidentified problem in early 2014, has recently hit back at critics for suggesting she had gained weight.

Gomez, who ended her on and off relationship with 21-year-old singer Justin Bieber last October after four years of dating, does not feel the need to explain herself or discuss her figure with anyone.

The source added, "There is no apology left in her. Selena feels sexier than ever. Criticism won't diminish her personal growth."