Charli XCX did a photoshoot for Topshop wearing a mix of her own clothing and Topshop items. She wears a choker from Cyberdog (unavailable), Topshop Coil Spring Bracelet (£10.00/$25.00), Topshop Sick Tee (sold out), her own rose leggings similar to these Floral Matte Liquid Leggings ($36.00), and Moonspoon x Topshop Buffalo Trainers in spot print (£145.00).
update: her exact leggings are Roberto Piqueras Roses Leggings (£180.00)