Thought Katy Perry might forget about her love of nail art with all the hair dying she's been doing? That's not Mrs. Russell Brand's style. Last night, she tweeted a photo of her nails with this holographic Smurf manicure. They look like they may be artificial nails, and it was for the premiere of The Smurfs, so it wasn't exactly out of the blue (ha ha). Regardless, Katy certainly hasn't lost her sense of adventure. Do you like the look?