"90210" Celebrates 100th Episode

We are on the scene as the cast and crew of "90210" toast to their 100th episode with cupcakes and good times! Stars such as AnnaLynne McCord, Shenae Grimes, Matt Lanter, Jessica Stroup, Tristan Wilds, Michael Steger, and even Denise Richards take some time to chat with us about what's in store for Season 5, share some encounters with original "90210" castmembers like Jason Priestley, Luke Perry, and Shannen Doherty, and they answer some Twitter questions from fans. Congrats, all! Hosted by Nikki Novak (@nikkinovak).