The 50 Craziest Pop Stars Ever!

Britney placed number 6 out of 50.

6. Britney Spears America's favorite sweetheart croons America's favorite cry for help.

Case History Even before her I do/I don't to hometown pal Jason Alexander (never mind Fed Ex), Spears had been regularly frightening her handlers with Girls Gone Wild antics. Jell-O shots and table dancing graduated to TV breakdowns and panty-free good times with role model Paris Hilton. But nothing could have prepared her fans for a self-inflicted shearing that left her looking like a cross between G.I. Jane and the dude from Powder. As of press time, this story is developing...

Crazy Moment: Her drunken 55-hour marriage to Jason Alexander? Her sober marriage to Kevin Federline? It's a tough call.

She's So Crazy: "I get to go to lots of overseas places, like Canada."

Check out the whole list at Blender.