'Weeds' to Get Michelle Trachtenberg as Guest Star

Mary-Louise Parker better watch out! Gossip Girl's Michelle Trachtenberg will be guest starring on Weeds as Nancy's rival!

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According to Entertainment Weekly, Michelle is set to make a guest appearances on this season Weeds in two episode.

The Gossip Girl star will play Emma, a low-level pot dealer and naturally catches the attention of Hunter Parrish's character Silas.

Sounds like the type of scandal Michelle is quite skilled at after playing Georgina!

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Weeds seventh season airs tonight on Showtime.

Watch a teaser for the season, below!