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 Hemingway & Gellhorn actress made her grand entrance in a white Antonio Berardi gown that had an angel wing mosaic design.
Fred Leighton jewels and metallic strappy sandals completed her heavenly look.
[Image via Getty Images.]