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.]
She wore a black sequined daring Jenny Packham gown with gold embellishments that showed off a very plunging neckline.
The fit was so perfect, it was almost as if the dress was melted on to her! She paired the gown with a gold Swarovski crocodile clutch, oversize gold earrings and about 3 different unique bold rings.
Take a look (below) at more pics of Vanessa and her celebupals at the after party!! AND, to get a better look at that plunging neckline!
[Image via Daniel Tanner/WENN.]