Mary-Kate Sparks Up for Season Three of "Weeds"

In one of the, er, oddest bits of casting recently, Showtime announced that Mary-Kate Olsen will join the cast of drama Weeds, which returns for its third season of pot-scented shenanigans August 13th.

Mary-Kate Olsen (remind me, is that the blonde one?) will play Tara, a Christian who moves into a new planned community sponsored by a local evangelical church, located next to the Botwin's Agrestic. Tara will quickly become a new love interest for Nancy's son Silas (Hunter Parrish) and Olsen is already contracted to appear in 10 of the 15 episodes ordered for Season Three.

"Weeds isn't your eight-o'-clock family fare," says creator Jenji Kohan. "It's an adult show with adult subject matter and we're confident Mary-Kate is right for the role. She came in and read with Hunter and was absolutely charming and real and seemed like a great fit. Audiences have seen only one side of Mary-Kate but here, we'll see her in a whole new light."

(I could make a joke there but I just won't.)

She joins the recently cast Matthew Modine, who has signed on to play a wealthy developer (the very same one behind Agrestic's rival Majestic) and a potential love interest for Mary-Louise Parker's Nancy Botwin.

Additionally, Zooey Deschanel will pop up in the third season premiere, reprising her role as Andy's eccentric girlfriend Kat, while Carrie Fisher will guest star next season as Celia's divorce lawyer.