Kevin Earl Federline (born March 21, 1978), also known as K-Fed and FedEx, is an American dancer, actor, and DJ. He is the ex-husband of singer Britney Spears, and fought a public child custody battle following their divorce. In 2006, Federline released a debut album, Playing with Fire, which was panned by critics as one of the worst albums ever released. He has since made a number of television and film appearances, and also worked as a DJ. His memoir, You Thought You Knew was published on October 21, 2025.