Despite growing up with famous parents Demi Moore and Bruce Willis, Rumer Willis hasn't managed to evade tragedy. She's dealt with anxiety, bullying, and more.

Scout Willis spoke exclusively to PEOPLE about the positive influence of her mom Demi Moore at the Los Angeles premiere of 'The Substance' on Monday, Sept. 16.

Demi Moore posed on the red carpet with her daughters Rumer, Scout and Tallulah Willis at the Los Angeles premiere of her new movie ‘The Substance’

The star of the upcoming body horror film The Substance appeared on a Sept. 13 episode of The Drew Barrymore Show, and the two discussed their previous work on 2003’s Charlie’s Angels: Full Throttle, in which Willis has a cameo role.

Demi Moore was joined by daughters Tallulah, Scout and Rumer Willis at the Los Angeles premiere of "The Substance."

Scout Willis says her mother Demi Moore, who shares three daughters with ex Bruce Willis, taught her and her sisters Tallulah and Rumer about finding beauty from the inside out.

Demi Moore's daughter Scout Willis recently revealed some of the valuable lessons her mother has taught her, which have helped her in life. Willis spoke about how her mother, who is currently making headlines for her latest body-horror film,