Kathleen Hanna (born November 12, 1968) is an American musician, activist, and zine writer. She is the former lead singer of Bikini Kill and feminist electro-punk band Le Tigre. In 1998, Hanna released a solo album under the name Julie Ruin. Hanna has contributed a great deal to the revival of feminism and is considered one of the leading icons of the '90s riot grrrl movement. She has collaborated with a wide variety of musicians, appearing on records with numerous artists, such as Atari Teenage Riot, Joan Jett, the Rickets, Green Day, Internal/External, and Mike Watt.