Today's date is a monumental moment in pop culture history, it's 9-02-10! We're celebrating with a look back at the 90's cast and their memorable moments, but even celebrities like Nicole Richie are tweeting messages about the show. The updated version of the series has a new following as well, but we're highlighting the original cast and their iconic looks — how well do you know your 90210 trivia? Click through to reminisce about old times with Brenda, Dylan, Brandon, Steve, David, Andrea, Donna, and Kelly.
Pics: Celebrate 90210 With a Flashback to the '90s!