Katherine Heigl hosts Ellen Pompeo’s baby shower

Katherine Heigl may stick her foot in her mouth on a regular basis, but Saturday, she was all smiles as she hosted a baby shower for preggers co-star Ellen Pompeo.

The 25 guests, including Kate Walsh, Sandra Oh and Rebecca Gayheart, dined in the backyard of Heigl’s home in the Los Feliz section of Los Angeles.

Pompeo and her husband Chris Ivery are expecting a baby daughter in October.

“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,” a source told PEOPLE.

Umbrellas shielded guests from the heat and pink flower arrangements and candles accented the tables. Presents were in pink and yellow and the gifts included a Sleep Sheep toy mobile, Sleepy Safari stacking toys, organic hooded towels and a Kiddopotamus organic swaddle wrap. Pompeo registered at the Juvenile Shop in Sherman Oaks.