Denise Richards Denise Richards

Denise Richards is moving to 90210 just in time for the CW drama's 100th episode, Entertainment Weekly reports.

Richards, 41, will play Gwen, described as a sexy, wealthy socialite who graduated from West Beverly High School. Gwen is the head of a very powerful and very exclusive women's club that Naomi (AnnaLynne McCord) will do anything to be a part of. That is, until she realizes this group is a grown-up version of a Mean Girls-esque clique.

Sneak peek of Ryan Lochte on 90210

Richards most recently shared the screen with her ex-husband Charlie Sheen on Anger Management and also played herself on the most recent season of 30 Rock.

The new season of 90210 premieres on Oct. 8. Richards' episode will air Nov. 26.