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.]
The singer turned to one of her trusted faves, Givenchy, for the event, looking vampy-chic in an opulent black number with seksi center slit and dramatic fringed sleeves.
Her gorgeous red mane and porcelain skin were the PERFECT accessories.
This is one of her best looks EVER! A+!
[Image via Getty Images.]