Instagram | @katherineschwarzenegger

Chris Pratt Announces Arrival Of His Daughter In Heartfelt Instagram Post

Congratulations are in order for Chris Pratt and Katherine Schwarzenegger, who welcomed their first child together this past week.

The exciting news was confirmed by Katherine's brother Chris, who spoke with ET this past weekend.

The couple has kept Katherine's pregnancy extremely private and off social media, so any news about this new lil' bundle of joy is exciting news!

Speaking with *ET* Katherine's brother Patrick confirmed the exciting news: “They’re doing great — just got her a little gift," while leaving a market in Santa Barbara, California, on Sunday.

Getty Images | Axelle/Bauer-Griffin

The 26-year-old then gave a thumbs up when congratulated on becoming an uncle, before showing the camera a gift with a pink ribbon.

Now, Chris has revealed the name and gender of their baby, and we couldn't be more excited! "We are beyond thrilled to announce the birth of our daughter, Lyla Maria Schwarzenegger Pratt," Chris announced.

"We couldn’t be happier. Both mom and baby are doing great. We are extremely blessed. Love Katherine and Chris."

A few moments later, Katherine posted a similar photo with the caption: "We are beyond thrilled to announce the birth of our daughter Lyla Maria Schwarzenegger Pratt. We couldn’t be happier and we feel extremely blessed!"

We're so happy for this adorable couple, who tied the knot last June.

This latest lil' bundle of joy joins Chris' 7-year-old son, Jack, whom he shares with his ex-wife, Anna Faris.