Kathleen Hanna is an American singer, musician and pioneer of the feminist punk riot grrrl movement, and punk zine writer. In the early-to-mid-1990s, she was the lead singer of feminist punk band Bikini Kill, and then fronted the electronic rock band Le Tigre in the late 1990s and early 2000s. Since 2010, she has recorded as the Julie Ruin.

Bikini Kill is an American punk rock band formed in Olympia, Washington, in October 1990. The group originally consisted of singer and songwriter Kathleen Hanna, guitarist Billy Karren, bassist Kathi Wilcox, and drummer Tobi Vail. The band pioneered the riot grrrl movement, with feminist lyrics and fiery performances. Their music is characteristically abrasive and hardcore-influenced. After two full-length albums, several EPs and two compilations, they disbanded in 1997. The band reunited for tours in 2019 and 2022, with Erica Dawn Lyle on guitar in place of Karren.