Do you know what you know Judy Greer from? After having roles — but not being the headlining star — in movies like The Descendants, 13 Going on 30, and Jeff, Who Lives at Home, Judy decided to write about her career in new book I Don't Know What You Know Me From: Confessions of a Costar. And in a recent visit to our New York studio, she told us all about life on set with George Clooney, Jennifer Garner, and more. On Allie: Banana Republic dress