Katy Perry makes an appearance on The Tonight Show (video), also dresses like a giraffe



Katy Perry rocks a short blue dress while making an appearance on The Tonight Show with Jay Leno on Friday (July 26) in Burbank, Calif.

The 28-year-old entertainer, who just became the most followed female on Twitter, chatted with host Jay Leno about her new animated film The Smurfs 2, in theaters July 31.











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