By Michael Ausiello
Updated September 24, 2010 at 08:30 PM EDT

Image Credit: Bob Charlotte/PR Photos; Mitchell Haaseth/NBCOur favorite Greendalians are under assault again—this time from Lizzie McGuire!

Community—a.k.a. NBC’s little overachiever that could—has tapped Hilary Duff to guest star as a member of a mean girl clique that goes head-to-head with the Scoobies, sources confirm to me exclusively.

Duff’s episode is slated to air during November sweeps.

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