Wednesday, September 22, 2010 9:31am ET by  
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Katy Perry's 'Sesame Street' cameo

Katy Perry has made a cameo appearance in an episode of Sesame Street.

The pop princess has sung a version of her hit, 'Hot & Cold', and reworked the song for the long-running children's TV Show in a bid to teach kids about opposites.

The clip, which has already had almost one million YouTube viewers, sees the star dressed up in a wedding veil similar to her outfit in the original music video.

During the clip, she says to Elmo, "You said you wanted to play dress up, don't you? Come on Elmo, don't you want to play?"

The altered lyrics to the song include, "You're up and you're down/You're running around/You're fast and you're slow, you stop then you go."

 The "California Gurls" singer filmed her appearance in March and joked at the time on Twitter that she was "in lurv" with the famous muppet.

Perry's guest slot celebrates the show's 41st season.