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.]
Katy Perry isn't the only one in the Brand household to have a Cosmo cover.
The girly mag has put Russell Brand on the front of the February issue because he's been named their "Fun Fearless Male".
As much as we like the funny man, he really needs to take some Smizing 101 with Tyra Banks.
[Image courtesy of Cosmopolitan.]