Perry Stages Surprise Set At Old High School

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September 15, 2010 | 3:20pm EST

Pop star Katy Perry turned up the heat at her old high school on Tuesday when she returned to stage a surprise performance dressed in a sexy cheerleader’s outfit.

The I Kissed A Girl hitmaker stunned students at Dos Pueblos High School near Santa Barbara, California by appearing as the special guest at a show held in the venue’s football field.

The star ran out from the stands in a blue and white cheerleader’s uniform before stripping off to reveal a figure-hugging halter neck dress to perform her hits.

But Perry decided to use the school return to air out an old classmate who snubbed her advances when she was a lusty schoolgirl.

After spotting the former pal in the crowd, she called out to him, saying, “You were the most popular kid in my class but you never wanted to date me… You really chose right honey! What’s up? What’s up now?”

Perry then dedicated her next song to the embarrassed male – a track entitled You’re So Gay.