It looks like the 100th episode of 90210 will be an especially sexy affair.

With Carmen Electra already booked to appear on that installment as the head of a modern burlesque troupe, Entertainment Weekly now confirm that Denise Richards will also play a role on the show's celebratory hour.

Charlie Sheen's ex-wife will play a West Beverly alum named Gwen who is now a wealthy socialite in charge of a women's club Naomi is dying to join.

The special episode airs on November 26, while 90210 Season 5 kicks off on October 8.

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