Katherine Heigl hosted a baby shower for mom-to-be Ellen Pompeo -- and Pompeo was joined by the women of "Grey's Anatomy" to celebrate her daughter's impending arrival!
Heigl invited 25 of Ellen's closest friends -- including Kate Walsh, Sandra Oh and the real-life Mrs. McSteamy, Rebecca Gayheart -- to the girl-themed outdoor bash at Katherine's home in Los Angeles.
A shower source tells People magazine, "Ellen looked gorgeous in a white summer dress with her hair in a braided up-do. She seemed very excited to celebrate with her girlfriends."
The party was decorated with pink flower arrangements and candles that accented the outdoor tables, shielded from the sun by oversized umbrellas.
Pompeo and her husband Ivery are expecting a little girl in October.