Grey’s Anatomy cast reunion alert! Kate Walsh threw a birthday party for Sally Ann Brooks, her good friend (and onetime Grey’s guest star), at BoHo, a new gastropub in Hollywood. And T.R. Knight and Justin Chambers were on hand to celebrate with their significant others. While Chambers stayed near his wife Keisha, Knight was equally affectionate with boyfriend Mark Cornelsen and “let [him] take a seat on his lap,” a guest tells us.

Source: People

Pictures will be added to the gallery as soon as any have been released.