Grey's Anatomy Alum Katherine Heigl In Gently Down The Stream. (UPDATED!) image

Katherine Heigl (flynetonline)

This summer.

Updated August 2:

"Gently Down The Stream" is currently being shot in Connecticut, and is now known as "The Wedding." Check out the photo of Katherine in character on the set!

Original article June 10:

Actress Katherine Heigl, who formerly played Isabelle Stevens on "Grey's Anatomy," is set to begin filming on her latest movie, "Gently Down The Stream." The flick will be shot this summer in Connecticut, and will co-star Topher Grace, Robert DeNiro, Amanda Seyfried, and Diane Keaton. It's the story of a doctor who falls for his adopted brother's sister.

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