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.]
And her look just makes us wanna party like it's 1929!!
Dripping in black and gold, Cher paired her party dress with black tights and boots to dance (and host) the night away in honor of all the artists being celebrated in Europe tonight!
[Image via Getty Images.]