Sandra Jacqueline Denton, also known as Pepa, second from left, and Cheryl Renee James, also known as Salt, second from right, of Salt-N-Pepa, and Cindy Herron, from left, Terry Ellis and Rhona Bennett, of En Vogue, perform a medley at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 20, 2018, in Las Vegas. (Photo by Chris Pizzello/Invision/AP)