Willis plays one of the sorority sisters, Joanne, an introvert in a back brace with very low self-esteem.
“Joanne has always hidden behind her brace,” Willis said. “Even though she doesn’t need it anymore, it’s kept her from having to show the world her true self.”
This is not Willis’ movie debut, but it does mark her first high-profile mature role.
Prior to this, Willis had primarily been a child actress with small roles in a few of her parents’ movies, including Hostage and The Whole Nine Yards, which starred her father, and “Striptease,” starring her mom.
Even when she didn’t work on her parents’ movies, Willis said she hung around the sets because she liked the atmosphere and people, but she added that she always felt more like an “accessory” than a member of the production.
Willis’ name is expected to attract audiences to House Bunny, which has raised the stakes for the young actress.

“It’s been a very different experience to be on my own,” Willis said.
There is more to come for young Willis. She appears in the upcoming comedy Wild Cherry, a dark drama Whore and Slightly Single in L.A.
It has not gone unnoticed in Hollywood that her appearance has changed to fit her burgeoning career. In May, Willis made People magazine’s list of 100 most beautiful celebrities.
“After being compared to Jay Leno for so long, you don’t think of yourself that way,” she told Page Six Magazine earlier this month. Leno is the U.S. talk show host who is often chided about the size of his chin.