When Dua Lipa sat down with Rolling Stone during Mistr’s National PrEP Day celebration on Thursday night, she was still on cloud nine after performing with Gwen Stefani at her show in Los Angeles the previous evening. Lipa had surprised fans by welcoming the No Doubt frontwoman and diving into a duet of “Don’t Speak.” “I’ve loved Gwen my whole life. I’ve found her so inspiring. I’ve loved her music. I love her toughness,” Lipa tells Rolling Stone at Mistr’s event at the Abbey in West Hollywood.