Age: 23
Occupation: Singer
Previous TIME 100 appearances: 0
Rihanna has had eight No. 1 hits on the Billboard Hot 100 and has become the hip-hop world's go-to siren whenever a rap star needs someone to sing his chorus. You can hear her on Kanye West's "All of the Lights" and Eminem's "Love the Way You Lie," as well as her own hits "Only Girl (In the World)" and "What's My Name?" The Barbados-born recording artist has managed to hold her own in the male-dominated rap world while also dabbling in pure, feminine pop.