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.]
Diane Kruger kicked off the Cannes Film Festival in style today!
Since we can see the entire dress on Diane, she totally wins this "who wore it better" battle.
[Image via Lia Toby/WENN.]