Grey’s Anatomy 2011 Spoilers: Which Gossip Girl Star Is Joining Cast As Sloane’s New Love Interest?

A former Gossip Girl guest starring schemer is joining the cast of Grey’s Anatomy as a new love interest for McSteamy.

Holley Fain who played Madeline Vanderbilt, the wife of Nate’s cousin Tripp will work as an ophthalmologist on the show when she meets Seattle Grace’s resident plastics specialist.