It’s not a collaboration Rolling Stones fans are likely to request.

But much of the audience would have welcomed Katy Perry with open arms on Saturday as she joined the band on stage.

The pop star teamed up with the legendary rockers at the MGM Grand Garden Arena in Las Vegas, Nevada and made sure she dressed to impress.

Beast of Burden: Katy Perry joined the Rolling Stones on stage in Las Vegas, Nevada on Saturday

The 28-year-old graced the platform wearing lots of leather in the form of Sєxy thigh-high boots and a bustier top with a coordinating skirt.

Katy sang Beast of Burden from the group’s Some Girls album and was thrilled to be in the presence of Keith Richards, Charlie Watts, Ronnie Wood and singer Mick Jagger.

In fact, Katy was so happy about joining Mick that she found herself getting overly tactile.

Belting it out: The pop star looked racy in a тιԍнт-fitting ensemble

After the 50 and Counting tour show, she boasted on her Twitter page: ‘Yes, I just did gyrated on Mick Jagger. WHAT?! #Stones50.’

Her appearance just six songs into the set came only a few hours before the musicians announced the act.

Katy replied ‘I’m much obliged and quite honored’ to a tweet which revealed their plans.

Fifth wheel: Katy  sang with Mick Jagger at Rolling Stones concert

Getting close: Katy said she gyrated on rocker Mick during the gig

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Hell for leather: The singer donned a Sєxy ensemble for her collaboration with the legendary group

The fan followed up the special moment by posting a snap from her section of the show, captioning the picture: ‘Mick & Kate forever!’

Adding on Sunday: ‘Thanks for letting me be the 5th wheel last night! @Rollingstones.’

Katy comfortably threw herself in to the mix as she put an arm around Charlie to pose for a sH๏τ in front of a black background.

50 and Counting tour: They teamed up at the MGM Grand in Las Vegas, Nevada at the weekend

She isn’t the only act to join the Rolling Stones on stage this year. They have had several collaborators with singers including Tom Waits and Gwen Stefani. 

The follow evening Katy put on a more preppy show as she wore relaxed to gear to the famous Chateau Marmont H๏τel in West Hollywood, California.

She donned a pink ʙuттon up shirt with large spectacles and a side braid in her raven tresses as she spent Mothers’ Day with a friend.

Dressed down: Katy spent Mothers’ day out with a friend at Chateau Marmont in West Hollywood, California