Katy Perry Goes Smurfette Blue for 'Jay Leno' Appearance

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.

During the appearance, Katy talked about how she prepares for her Smurfette voice, which doesn’t take much work at all. Watch below!

Also pictured: Katy wearing a giraffe costume at her friend Johnny Wujek‘s birthday party over the weekend, where Peligroso tequila was served.

FYI: Katy is wearing a Celine dress, Christian Louboutin shoes, and a Baccarat collar choker. She is carrying an MCM bag at the party.