Celebrity Custody Battles: Will Seal And Heidi Klum's Child Custody Dispute Turn Ugly?

Are Heidi Klum and Seal headed for a messy custody battle?

The former couple have put up amicable front since announcing their split in January, but Radar Online is reporting that things may turn ugly as they wrestle for custody of their four children, including the supermodel's daughter from a previous relationship.

Klum requested primary physical custody of the children in April, with Seal getting visitation rights. In response, the singer filed papers of his own, requesting joint physical custody of the kids.

We hope Seal and Heidi can work out their differences, but if recent celebrity custody disputes have taught us anything, it's that celebs don't always play nice when it comes to fighting for the kids. Click through the slides below for some of the most notorious celebrity custody battles, from the popstar who lost custody of her kids, to the famed director who was slammed by a judge.