Everyone's Got Backstory

Rumer Willis, the daughter of Bruce Willis and Demi Moore, got the band back together yesterday ... on the red carpet. Us magazine reports the whole family attended the 20-year-old star's "The House Bunny" premiere and took up an entire row in the theater!

Demi was accompanied by husband Ashton Kutcher, and Bruce brought his girlfriend, model Emma Hemming. Rumer's boyfriend, actor Micah Alberti ("Wildfire"), as well as her siblings Tallulah and Scout, were also on hand for the festivities at the Mann Village Theater in Westwood.

Rumer told Us that everyone gets along, adding: "If we weren't all entirely morally opposed to doing a reality show, I guarantee it would be the best-selling reality show ever." Oh, if only ...

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