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.]
During this year's BAFTAs celebration, The Master actress wore a provocative Elie Saab Haute Couture full-length gown featuring delicate Chantilly lace and exquisite bead work…
And a giant SLIT straight up to her crotch!
Amy paired the statement outfit with subtle nude satin Casadei sandals…you know, not to draw attention away from the PLUNGING open back and exposed leg, and Faberge jewels.
[Image via Getty Images.]