Early in her career, Rayder and her sister Missy lived across the street from each other. They were featured together on the May 2000 cover of "Harper's Bazaar". The Rayder sisters (along with a third sister named Molly) appeared in holiday advertisements for Gap as siblings in 2003 to the tune of "Put a Little Love in Your Heart". In later years, the Rayder sisters appeared in Gap holiday advertisements as a pair. In 2004, Rayder started dating Red Hot Chili Peppers' bass player, Flea. In January 2005 the couple publicly announced their engagement. On October 26, 2005 Rayder gave birth to her first child, a daughter named Sunny Bebop Balzary. Flea's bandmate, John Frusciante, is Sunny's godfather. The song, "Hard to Concentrate" from the Red Hot Chili Peppers' 2006 album, "Stadium Arcadium" was written by Anthony Kiedis as a wedding proposal for Flea and Rayder. There are a total of four Rayder sisters and they have one brother and her father continued to live in River Falls in 2004. Rayder and Flea lived together in Malibu, California before separating. In the September 2010 issue of ‘’C’’ magazine, Rayder is featured with a group of women friends known as "The L.A. Ladies Choir" which meets at her and Flea's house in Los Feliz. The article goes on to mention that Flea is her husband and that he joins the women's group playing bass. The choir's group is coming out with their first album in September named "Joyfully." Rayder is a knowledgeable Boston Red Sox fan, and she is also a Green Bay Packers fan. Rayder has volunteered her time for programs for youth in the arts. Rayder has a tattoo on her back.