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.]
Someone's going to be firing their stylist after tonight!
The Mortal Instruments: City of Bones actress showed up wearing a black Houghton top and a high-low Fausto Puglisi Resort skirt with the same palm tree print as Bella's two-piece number.
We're not exactly sure if Lily's look is an any better than Bella's, but no one wants to be seen wearing the same outfit as another actress at an awards show. So awkward!
[Image via Getty Images.]