Ellen Pompeo Baby Girl: 'Grey's Anatomy' Star Is 'Forever Grateful' For Sierra Ivery [VIDEO]

Ellen Pompeo and husband Chris Ivery have welcomed their second daughter.

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On last night's episode of Jimmy Kimmel Live, the Grey's Anatomy star spoke on the news of her second child, daughter Sierra May, and dished on the top-secret surrogacy process.

"She was born two months ago. I've done it before," Pompeo explained, via an Oct. 3 report by Us Weekly. "The covert thing is kind of fun. This baby was born via surrogate, so I felt an obligation to keep the surrogate's privacy. That was of utmost importance to me."

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This is Pompeo and Ivery's second child together. The 44-year-old actress confirmed the birth of Sierra on Thursday afternoon with an adorable Instagram post. "Sienna May Ivery welcome to the world. We love you more than words can say," she captioned the photo. In a second photo, Pompeo allowed for a sneak peek into Sienna's baby nursery, which will be featured in the Nov. 2014 edition of Architectural Digest.

During her chat with Jimmy Kimmel, Pompeo gushed over her experiences with surrogacy.

"This is an incredible thing to do with your life, to give the gift of carrying someone's child. I am forever grateful and feel very blessed and grateful to her - she who will remain anonymous," Pompeo told Kimmel.

Pompeo also recounted their initial meeting with the woman who carried her child.

"I was there with her when they inseminated her, and we held hands," she recalled. "I looked into the microscope and I saw the embryo. I saw the baby, and they put it in a thingy and they inseminated her. And then we held hands and we prayed, we talked to God, and if she was meant to be. He said he was going to try to help us out and now we have a gorgeous baby girl."