Britney Spears is NOT happy her son Sean Preston Federline spent Christmas with her estranged relatives! If you missed it, Brit Brit celebrated Christmas with her son Jayden. So nice considering how bumpy her relationship with her sons has been! Unfortunately, Jayden's brother Sean neglected to take the trip. He supposedly couldn't make it because of work obligations, TMZ reported. Instead, he spent the holiday in Louisiana with his aunt Jamie Lynn Spears and grandmother Lynne Spears.