Mary-Kate Olsen is joining the cast of the acclaimed dark comedy series 'Weeds'.
The Hollywood Reporter says that Olsen will play Tara, a devout Christian who becomes the love interest for Nancy Botwin's (Mary-Louise Parker) son Silas (Hunter Parrish).
The 20-year-old will appear in 10 to 15 episodes of the third series of 'Weeds'.
The third series of 'Weeds' premieres on US TV on 13 August.
