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 Fashion Star stepped foot on to the red carpet wearing a floral threadwork embroidered and beaded Naeem Khan gown in a pale blue to match the chilly California weather.
Nicole finished off her frosty look with a black fringe clutch, matching blue eyeshadow and soft, retro curls.
It's a very glam look for Miz Richie, but we feel like we've seen this before from her.
[Image via Getty Images.]