Charli XCX Explains Why She Didn't Do Britney Spears' Remix for 'Slumber Party'

A fan asked Charli XCX a question on Watch What Happens Live that left her impressed by the inside knowledge the fan had! The 29-year-old singer appeared on the late night talk show’s latest episode, which aired on Thursday (March 3). A fan asked if it was true that Charli was Britney Spears‘ first choice