Kierin Magenta Kirby (born August 15, 1963 in Youngstown, Ohio) is an American singer and DJ.

Well known for her D.J.ing and club performances, she has gained a cult following internationally. In 1995, a solo song named "Touch Me With Your Sunshine" appeared on the Wigstock: The Movie Soundtrack. In 1996, she debuted new songs at the Enit Festival. The public could hear that her new direction was more DnB than dance, but none of the songs were ever released. In the late nineties, she has collaborated on the albums of such diverse artists as Bootsy Collins, I Kamanchi and A Guy Called Gerald. Following the solo releases of the other two former band members, Kirby's solo debut has been long anticipated. In 2002, she contributed an exclusive solo track called "I'm not staying at home" to the compilation "Straight Up & Dirty". In 2005, she began performing new material, then appearing in club performances internationally in Australia, New York City, Chicago, New Orleans, Brussels, Zurich, San Francisco and Amsterdam. She also made television appearances on the OUTtv/Pink TV television series the House of Venus Show and has been featured in the New York City festival Wigstock. In 2005 Kier was the featured artist on the podcast Ron-Kat-Delic Show, where she premiered her solo work for the first time, namely a song entitled "Hot Wax." In 2006, she toured Australia with the Good Vibrations Festival.

She has since moved back to New York City, and is rumored to be putting together the long-anticipated solo album for release. Unreleased songs include "Me and my records", "Bulletproof", "Dance Police", "The Outer planets", "Black out love affair", "Wear U Out", "Go Down" and "Strip". Kirby occasionally releases snippets from her body of work on Myspace and her personal website. There are also several clips of her group and solo performances on YouTube. Most recently, Kirby has released a sound bite of "I Surrender" on Myspace.com, hinting that a solo album effort is still ongoing. On April 28, 2007 she performed at Coachella.   She appears on the release from NYC noise band, Apollo Heights on a song titled "Winter In The Summertime", released in October 2007.