Britney Spears & Kevin Federline
When Britney Spears and Kevin Federline married in 2004, many predicted it wouldn't last, but no one could predict what would happen after the divorce papers were filed.
Both parents petitioned for physical custody of their two sons, Sean Preston and Jayden James, a request that was granted to Britney. But soon after the divorce was finalized in 2007, Britney began to act bizarrely in public -- who can forget the photos of her shaving her head? In response, Kevin accused his ex-wife of alcohol and drug abuse, and claimed she put their sons in danger. In 2007, Britney partied hard, went to rehab and was whisked away from her home and committed to a psychiatric ward. In 2007, she also lost custody of Sean and Jayden.
By the end of 2007, Britney was granted monitored visits with her sons, but by 2008, her visitation rights were suspended and Kevin was granted full legal and physical custody of the boys.
Since then, Britney and Kevin have been able to move closer to joint custody, with close monitoring of Britney's progress.