Willis: 'My friends call me the bag lady'

Rumer Willis has joked that her friends call her "the bag lady" because she always carries bags of spare clothes with her.

The 21-year-old actress, who is currently starring in Sorority Row told OK that she likes to be prepared for all occasions.

"My friends call me the bag lady because in my car, I always have at least one change of clothes and all these different things," she explained.

"I think if you have a swimsuit with you at all times, if you have a dress you can throw on, you have whatever you need and you can go anywhere."

> Click here to watch our recent interview with Rumer Willis and Briana Evigan