Demi Moore has banned her children from having cosmetic surgery.

The 51-year-old actress, who has three daughters, Rumer, 26, Scout, 23, and Tallulah, 20, with ex-husband Bruce Willis, is reportedly terrified they will resort to extreme measures in a bid to look perfect all the time.

A source told the National Enquirer magazine: ''Demi thinks all her daughters are naturally beautiful.

''She's worried that Rumer and her sisters feel pressure to chase an unrealistic Hollywood physical ideal.''

The 'LOL' star, who is rumoured to have had multiple plastic surgery procedures in the past, is said to be doing everything she can to ensure her girls don't do anything drastic to change their appearances.

The source said: ''[She] got a few of her daughter's friends together and lectured them about the pitfalls of cosmetic surgery.''

Demi has rarely been away from Tallulah's side since she was released from rehab last month.

The blogger sought treatment shortly after admitting she struggled with an eating disorder and body dysmorphia when she was younger.

During an interview in August, she said: ''I struggled a lot when I was younger.

''Like I'm diagnosed with body dysmorphia with reading those stupid f***ing tabloids when I was like 13 and feeling like I was ugly, like always. I believed the strangers more than the people who loved me because why would the people who love me be honest?''