Grey's Anatomy star Eric Dane and his wife, Rebecca Gayheart, welcomed his fellow cast members and other celebrities to the Chrysalis Butterfly Ball over the weekend.

An L.A.-based non-profit organization, Chrysalis is dedicated to helping economically disadvantaged and homeless individuals become self-sufficient through employment opportunities.

In attendance was the former Grey's Anatomy and current Private Practice star, Kate Walsh, and her new fiance, Alex Young.

Rounding out the Grey's Anatomy-related attendees were the handsome Justin Chambers and his wife Keisha, Patrick Dempsey and wife Jillian, Ellen Pompeo, Sara Ramirez and T.R. Knight.

Gayheart has been organizing the event for months. As a result, she and Dane are going on a month-long, around-the-world vacation before he returns to the set of Grey's Anatomy to begin filming Season 4.

Follow the jump for pictures of Eric Dane, Rebecca Gayheart and their fellow Greys Anatomy cast members from the event.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.