Kevin Earl Federline, (born March 21, 1978), also known as K-Fed, is an American dancer, actor and DJ. He is known for his two-year marriage to American singer Britney Spears, for whom he was previously a backup dancer, and the child custody battle that followed,Phares, Heather. [ Kevin Federline biography]. Allmusic: 2006 which earned significant media coverage. His popularity led to him releasing his critically panned debut album Playing with Fire in 2006, which is commonly considered to... meer