Ashlee Simpson has regular injections in her face to keep her looking young, it has been claimed.

The 23-year-old singer - whose father Joe recently confirmed she had rhinoplasty to reshape her nose and help her breathing in April 2006 - visits her plastic surgeon Dr. Raj Kanodia every month to have collagen filler injected into her face, according to In Touch Weekly magazine.

A source close to the singer said: "She is determined to stay looking as young as possible for as long as possible. The fillers get rid of any wrinkles, and keep her face looking young, taut and smooth."

Ashlee has always refused to comment on her nose job, but previously revealed she doesn't think there is anything wrong with plastic surgery. She said: "I don't get bothered by people saying what they say. I'm a happy person and I'm happy with my looks. I'm not an insecure person. "I believe if somebody chooses plastic surgery it should be for themselves, not for anyone else."