Britney, Britney Britney! You may have your rehab sober chips, but you sure don't seem to have all of your marbles.

The former Mrs. Federline went out to dinner Monday night in a green dress that she put on backwards! Sometime between going into the restaurant and exiting after her meal, she switched the dress around.

Maybe she was channeling fellow songbird Celine Dion?

Could Brit have been stewing over recent rumors that K-Fed impregnated his ex Shar Jackson, the mother of his first two kids? Or maybe it’s the fact that she is rumored to have been drinking recently at a club. Who knows, but one thing is for sure – somebody needs to get her a full-length mirror so she won't ever have to record "Oops, I Did It Again: The Backwards Dress Remix."