Have you ever wanted to see Shira Lazar's prom dress? TOO BAD! All is revealed in this episode of "Top That" from Popsugar Girls' Guide.
Shira, Becca Frucht and Tyler Oakley get in the wayback machine to reveal their own prom photos and guess the photos of some big celebs.
(Example: Whose prom photos took place between two ferns? Nope, not Zack Galifianakis!)