LONDON Singer Charli XCX , whose album "Brat" inspired a cultural phenomenon last summer, was the big winner at the BRIT Awards, Britain's pop music honours, in London on March 1, picking up five prizes. "Brat," which inspired fans to film themselves dancing to its tracks and whose lime green cover look was adopted by U.S. presidential hopeful Kamala Harris' campaign on social media after the singer referenced her in a post, won the coveted album of the year category. Charli XCX, who had led