Uber-waif Mary-Kate Olsen (a.k.a. "The One Who Went To School For, Like, Two Whole Semesters") will finally step away from lamprey-like sister Ashley and break out in her own co-starring role on Showtime comedy Weeds. The show's third season, premiering August 13, features Olsen as a "devoted Christian girl" who becomes a love interest for Nancy's son Silas, and Olsen will appear in 10 of 15 episodes. The role also marks the previously PG-rated Olsen's first step towards "adult" subject matter, so if you're not done perving out about Neko Case's underwear, have at it.
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