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.]
What a way to go out!
The singer and judge walked into the massive closets of Topshop and picked out a fabulous copper and teal metallic cutout mini dress that fit her like a glove.
The only downside to Demi's finale look is her black pumps, which she's worn over and over again this season. They're way too heavy and clunky for the dress, but we're so mesmerized by the shininess we'll let it slide.
[Image via Nikki Nelson/WENN.]