We’re used to seeing Katy Perry with funky hair colors and now the singer is going green! Katy showed off her new hair color on Facebook writing, “SLIME GREEN FOR SPRING.” And she isn’t the only star changing up their hair style! Maggie Gyllenhaal debuted new blonde hair this week in Cannes! And while Kelly Osbourne is sticking to her lilac locks, she shaved the side for an edgy new look! Take a look at Kelly, Katy and Maggie’s new hair styles right here!