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Michelle Trachtenberg to Go to Pot on ‘Weeds’

”Gossip Girl“ star will play a low-level dealer who steps on Nancy Botwin’s territory; catfight to ensue?

In what will surely invoke a collective gasp of "OMFG" among Michelle Trachtenberg's fans, Showtime announced that the "Gossip Girl" star will do a two-episode guest stint on the seventh season of "Weeds," which premieres Monday night at 10 p.m. PT/ET.

Trachtenberg, who plays manipulative dabbler in recreational substances Georgina Sparks on the CW drama, will portray Emma, a "sexy, intelligent, low-level, pot-dealing rival to Nancy (series star Mary-Louise Parker) who catches Silas’ (Hunter Parrish) eye," according to Showtime.

The "Buffy the Vampire Slayer" alum will be joind on the series this season by fellow guest stars Martin Short, Aidan Quinn and Lindsay Sloane, among others.