It's a Girl for Rebecca Gayheart and Eric Dane!

Rebecca Gayheart and her McSteamy hubby Eric Dane welcomed a baby girl, Hollyscoop reports.

The actress reportedly checked into the hospital Wednesday afternoon, with Dane by her side the whole time -- in scrubs, no less!

"They're both over the moon about it," a source close to the couple tells Hollyscoop exclusively.

"It just makes sense that I'm having a girl ... I don't know what it is, but I am excited it's a girl," Dane said recently about the baby girl.