May 13th, 2013
03:03 PM ET
Katy Perry spent Saturday night gyrating on Mick Jagger, and she's shouting it from
The pop star joined the Rolling Stones in Las Vegas as part of their "50 and Counting" tour. She took the stage and rocked out with the legends on "Beast of Burden."
Fans knew to expect Perry, who dressed for the occasion in a miniskirt and over-the-knee leather boots, as the Rolling Stones hinted that she'd join in the performance ahead of the show.
"I'm much obliged & quite honored!" the 28-year-old singer tweeted along with the announcement on Saturday.
She later followed up with a photo of her on stage with Jagger:
A moment of (clearly excited) boasting:
And a thank-you:
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