Charli XCX Performs at G-A-Y in London!

Charli XCX is putting on a fabulous show!

The 26-year-old “1999″ pop superstar performed at G-A-Y on Saturday night (October 13) in London, England.

PHOTOS: Check out the latest pics of Charli XCX

At one point during her performance, Charli was joined by RuPaul’s Drag Race superstar Tatianna.

Charli recently dropped the nostalgia-filled music video for her new single “1999″ with Troye Sivan, including references to The Matrix, the Spice Girls and Titanic. Watch it now if you haven’t already!

“CHOLI XBOX REALLY DID THAT!!!!!!” she later wrote on Twitter.