Discomboobulated Jessica

5/8/2007 1:07 PM PDT
A silver-sheathed Jessica Simpson had a little car confusion last night -- when she got into the wrong car outside her NYC hotel!

Jess was bustin' a lot of attitude in a spectacular glittering silver gown, pouting for cameras before getting into a black Escalade to take her to the Costume Institute Gala -- only her rented ride was the limo parked just in front of the mistaken SUV.

Simpson's hairdresser/BFF Ken Paves quickly realized Jessica's goof, helping her out of the SUV before it could drive off with the stowaway ditzy pop star. Simpson laughed it off as paps snapped away at the embarrassing incident, saying, "Of course, that happened to me."