Britney Spears and Kevin Federline

In July 2004, after three months of dating, Britney Spears got engaged to backup dancer Kevin Federline. They married in September, and had two sons together. Spears filed for divorce in November 2006. In 2007, Federline was awarded custody of their children, as well as $20,000 a month in child support, after Spears experienced a breakdown. She's since cleaned up her act and has increased visitation rights.