Britney Spears' first husband, Jason Alexander, publicly condemned Kevin Federline's upcoming tell-all memoir. Taking to Instagram on Tuesday, October 14, Alexander, who was married to Spears, 43, for 55 hours in January 2004, slammed the singer's second husband Federline, 47, in a lengthy post accompanied by a mocking meme. "Kevin, You Don't Get to Rewrite the Story Without Owning Your Role," Alexander, 43, began. "Surprise, surprise, it leans heavy on painting Britney in a bad light.