Rumer Willis has an "incredible" singing voice.

The 21-year-old daughter of Demi Moore and Bruce Willis wowed her 'Sorority Row' co-stars with her amazing musical talents.

Jamie Chung - who plays a sexy sorority girl in the horror film - said: "Rumer has the most incredible voice. We had a grand piano in our hotel and we'd come in from filming early in the morning and she was just jamming on the piano and singing. She has a voice!"

Rumer is far more modest about her musical abilities, insisting she is nowhere near as good as her famous father.

The budding actress said: "He's a bada*s harmonica player. I just saw him play with the Doobie Brothers and the Allman Brothers. He's really good.

"My music taste is from him. When I was growing up I was always listening to classic rock and a lot of jazz. So my knowledge of that is from him."