On Saturday night, Charli XCX headlined Paris’ We Love Green festival — her second time topping the bill at a major European fest this weekend. At We Love Green, Charli also put in a guest appearance on a song that has very little of the Brat energy that she’s been bringing to her own shows. Parisian hometown heroes Air also played We Love Green, and Charli joined them to sing “Cherry Blossom Girl,” a shimmering highlight from their 2004 album Talkie Walkie.