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.

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.

The “Ghost” star, 61, walked the red carpet with Rumer, 36, Scout, 33, and Tallulah, 30, at the Directors Guild of America Theater in Los Angeles on Monday.

Bruce Willis fans just got a health update on the beloved actor, via his ex-wife. Recently, Demi Moore made an appearance on The Drew Barrymore Show, and during their chat the conversation eventually turned to Willis, who was previously diagnosed with aphasia and later frontotemporal dementia (known as FTD).

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

During Friday's episode of The Drew Barrymore Show, Demi Moore shared how her ex-husband is doing amid his battle with frontotemporal dementia.

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,