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Koma shared the same photo on Instagram, writing in part: \"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 [peach] who makes it all possible. Cloud ten.\"

View this post on Instagram

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.

A post shared by Matthew Koma (@matthewkoma) on Oct 29, 2018 at 6:38pm PDT

Banks is the couple's first child together.

Duff shared the news of her pregnancy back in June on Instagram, stating they were expecting \"a little princess.\"

The \"Younger\" actress is also a mother to her 6-year-old son, Luca Cruz, from her previous marriage to Mike Comrie.

Koma and Duff have been dating since 2017.

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