Katy Perry Has a Blue 'Do in Paris

Katy Perry took the time to stop and pose for a few pics with fans in Paris on Tuesday, between shopping at Colette and heading to the Jean-Charles de Castelbajac show. It's Fashion Week in the City of Lights, and the city has been steadily filling up with Hollywood celebrities eager to get their eyes on the upcoming styles storming down the runway.

OK! NEWS: RUSSELL BRAND — "I LOVE CHARLIE SHEEN"

Katy better keep an eye on her hubby Russell Brand, who recently proclaimed that he loves Charlie Sheen.

OK! VIDEO: WATCH KATY PERRY PERFORM RIHANNA'S "ONLY GIRL" & WILLOW SMITH'S "WHIP MY HAIR"

We're not saying Russell's going to start spewing tirades about warlocks and winning, but still, watch out, Katy! You never know what the Sheen influence will do to someone.