Caterina Scorsone is pregnant with baby no. 3 with husband Rob Giles!
The Grey's Anatomy star shared the big news in the most unique way, via a Halloween costume Instagram post yesterday (Nov. 1).

"Our Family's about to get even kookier," the momma wrote alongside an image of her family dressed as The Addams Family. "#Pumpkinintheoven." The actress was dressed as Morticia Addams showing off her baby bump's profile.

The 38-year-old's co-stars immediately showered her with excitement. "Omg this is GREAT!!!!!!!!" Camilla Luddington wrote and Alex Blue Davis wrote, "This is amazing." Kevin McKidd left a slew of heart and clapping emojis while Greg German wrote, "SO GOOD," in all caps.

In the current season of Grey's Anatomy, Scorsone's character, Dr. Amelia Shepherd, is also pregnant with Dr. Atticus Lincoln's child, which is played by Chris Carmack.

The happy couple shares two children together, 7-year-old Eliza and 2-year-old Pippa. After Pippa was born with Down syndrome, the couple became champions of advocating for people with Down syndrome. The actress frequently posts about advocation and her amazing life with Pippa on her social media accounts.

"A lot of parents who find out their new baby has Down syndrome worry about what the impact of having a child with differences will be on their other kids," she recently posted on Instagram. "They haven't seen it modeled so they are afraid of it. I wish I could show everyone the joy and sweetness and love that has expanded and grown in our family since Pippa was born."

See the amazing birth announcement, below!

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