Kevin Federline

Kevin Federline is putting his ex-wife Britney Spears on blast after she criticized his parenting skills in the midst of a very messy public spat.

Britney's ex reportedly filed a police report against Jamie Spears last month.

From Khloe Kardashian and Lamar Odom to Tommy Lee and Pamela Anderson, look back at all the Hollywood couples who ran — not walked — toward the wedding aisle.