Well, the dress has been found ... to be a fake!
The thief who took the gown says he took the dress from Lupita's room at The London after finding the door ajar.
[Image via WENN.]
The supermodel looked sssssssentsational in a black Julien Macdonald gown with gold snake detail, asymmetrical neckline, and very seksi slashes on the hip and waist.
Christian Louboutin, Lorraine Schwartz jewels and sleek ponytail completed her fabulous ensemble.
[Image via Getty Images.]