Roseanne alum Sara Gilbert has joined the cast of the ABC pilot Girls on the Bus, playing a news reporter covering a political campaign on the road. Gilbert will star as Helen alongside the previously announced Kiele Sanchez, who plays Ronnie.

Like Sanchez (Related), Gilbert is a refugee from the WB's final season, where she starred in the weblet's short-lived laffer Twins.

Gilbert's other recent credits include ER and the feature Laws of Attraction.

Also joining the cast is Maulik Pancholy (Hitch, Weeds) as Skip.

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