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 beautiful 31-year-old was retro mod in her checkered Louis Vuitton long-sleeved dress that hit right below the knee.
Black pumps and clutch were the chic finishing touches.
Props to her stylist Brad Goreski for helping her pick out two perfect outfits in one night!
[Image via Daniel Tanner/WENN.]