When it comes to pop music Perry equals power, and Radio 1’s Big Weekend was no different.

Katy Perry proved why she is at the top of her game – while pulling some very animated faces – as she performed on Sunday night.

Closing the Main Stage of the two-day festival in Glasgow, the Roar singer, took to the stage in a whirlwind of facial expressions and raised fists.

Power woman: Katy Perry looked like a woman possessed as she took to the Main Stage at the Radio 1 Big Weekend in Glasgow o Sunday

BBC BNOC: Miss Perry was, quite literally, the centre of attention as the closing act of the two-day event at Glasgow Green

Fashion mashing: The singer managed to get futuristic, tribal and disco all into one with her unusual two-piece

More mix-up: Miss Perry was surrounded by dancers whop managed to look like samurai warriors and members of a long-lost African tribe all in one

Fighting back: A lot of Perry’s choreography promoted her as a roaring powerhouse – quite rightly

Earlier on Sunday a horde of stars had appeared on the main stage in Glasgow’s city centre, including Coldplay’s Chris Martin joining the Kings Of Leon for a rocking session.

The collaboration caps 48 hours of live music presented by the BBC’s mainstream youth music station.

After Saturday’s appearance by One Direction, the boybands kept coming with The Vamps, who look set to follow in the footsteps of McFly and Busted with their teen-pop appeal.

Do you hear the people sing? Katy holds out the microphone to her audience during her performance on Sunday night

More battles: You could certainly hear Katy Perry roar during her set on the main stage

.