Koma also took to the social media platform to share the news, writing: "Banks Violet Bair /// 10.25.18 /// We welcome a beautiful daughter, little sister, and best friend for life. Could not possibly be more grateful for our growing family and for the 🍊 who makes it all possible. Cloud ten."
The Younger actress, 31, is also a proud mama to 6-year-old son Luca Cruz, who she shares with ex-husband Mike Comrie.
Congratulations!