'Sex and the City's' Cynthia Nixon joins 'The Big C'

cynthia-nixon-getty.jpg Cynthia Nixon is heading away from "SATC" and towards "The Big C" as she signs on to a multi-episode arc of the new Showtime dramedy starring Laura Linney.

Linney plays Cathy, a woman who learns she has cancer and decides to reclaim her life in the face of the terminal diagnosis. Nixon will play Rebecca, Cathy's flaky, long-lost college roommate. She is slated to appear in four episodes of the 13-episode first season.

"The Big C" premieres Monday, August 16 at 10:30 p.m. on Showtime, following the sixth season premiere of "Weeds." What do you think, "SATC" fans? Will you tune in to see Miranda in a brand new role?

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