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.]
There was a special guest in the crowd while Janelle Monae took the stage in Russia: the one and only Karl Lagerfeld.
After performing the two caught up backstage and talked about music and their similar taste in fashion.
Check out the two's chit-chat in the clip (above)!