Credit: The WB Photo: Dawson's Creek: Where Are They Now?

Let's hear it for the girl!

Goldie Hawn's son Oliver Hudson just welcomed his third child, a daughter named Rio. The Rules of Engagement actor — who played Katie Holmes's love interest, Eddie Doling, on Dawson's Creek — already has two sons with his wife Erinn, Bodhi Hawn, 3, and Wilder Brooks, 5.5. Oliver's sister, actress Kate Hudson, has two sons as well, Bing, 2, and Ryder, 9½. So this is the first little lady in the clan.

Credit: Gareth Cattermole/Getty Images Photo: Goldie Hawn

Grandma Goldie tweeted the happy news on July 18: "Welcome Rio! Our first baby girl to join our family!” Hawn writes. “Oliver and Erinn thank you for bringing so much JOY to our lives! #happiness."

Oliver is Goldie's oldest child with her second husband, Bill Hudson. Goldie has been in one of Hollywood's greatest longterm relationships, with actor Kurt Russell, since 1983. They have a son, Wyatt.

Welcome, Miss Rio, and congrats to the growing family! 

Sources: @GoldieHawnUs WeeklyPeople