Source:www.thesuperficial.com

Britney Spears dashed any hopes that her "rehab" may have instilled a bit of class in her when she, for reasons best known to herself, found it necessary to strip down to her bra and then cover her head for a trip to a Carl's Jr.

Check out the story and the rest of the pictures on "The Superficial".

I guess she's determined to prove that Kevin Federline is more stable than her.