Who did Britney Spears marry in 2004?

Britney Spears was married to Kevin Federline from September 18, 2004 until she filed for divorce on November 7, 2006. They couple had two sons.

She was also VERY briefly married to childhood friend Jason Alexander on January 3, 2004. The marriage only lasted 55 hours, ending in annulment, most likely because she was intoxicated at the time of the marriage.