Maybe she got the idea from Kelly Osbourne?

Tallulah Willis ran errands around L.A. today, and Bruce and Demi's daughter was sporting some new grey hair! We're not sure we're the biggest fans of this look, but we have to hand it to her for being bold enough to try it out!

The 20-year-old is sober and healthy after her trip to rehab this past summer, so dying her tresses is probably the wildest she gets! "I've actually been so impressed and blown away by her strength and her openness and willingness," her sister Rumer told People.

Hottie with a body!