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.]
Teen Vogue got their hands on a picture of Betsey Johnson on her prom night in 1958 and it's amazing.
She told the mag:
"I was queen of my senior prom. I probably only won because I was on the prom committee. I wore hoops and petticoats to make sure my princess gown stuck straight out—it had to be big, big, beyond bouffant big!"
Some things never change. Well, except for maybe her hair.
[Image courtesy of Teen Vogue.]