Katy Perry performed "Part of me" song on the show American Idol results on Thursday (April 26) in Hollywood. "I and 12 girls strong military-style dance tonight on @ americanidol! Tune Fox at 8/7c! # PartOfMe # NightVision " wrote the singer 27 years of age.Katy actually pre-taped the performance last night after the term live show. "Jessica Simpson has had her baby yet?! I'm getting anxious " , Katy tweeted earlier in the day.
KATY PERRY at American Idol Show
