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The new 90210 girls are already out partying - wow, that didn't take long!

Shenae Grimes (on the right) and Charlize Theron AnnaLynne McCord (left) hit up the In Touch VMA after party at the Chateau Marmont last night. On the show, Shenae is basically playing the "Brenda Walsh" character while AnnaLynne is the "Kelly Taylor" - but unlike Shannen Doherty and Jennie Garth back in the day, it looks like these two are pals!

Mmm, give 'em a couple weeks, throw in some off-screen boy drama and I'm sure we'll get a cat fight!

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Whoa - looks like Shenae had a REALLY good time partying last night! But isn't she only 18?

Wonder if she ran into Michael Phelps!