Stephanie Beatriz Is a Mom! Brooklyn Nine-Nine Star Announces the Birth of Her First Baby

Stephanie Beatriz has welcomed her first child into the world.

The Brooklyn Nine-Nine star, 40, announced the birth of her baby girl Rosaline — pronounced Roz-uh-line, per her Instagram post — on Sunday.

"BÉBÉ HAS ARRIVED in style (and more importantly SAFETY) in @nuna_usa's Pipa car seat," Beatriz captioned an image of herself smiling alongside her newborn daughter, both of whom are strapped into the backseat of a car.

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Beatriz, who plays Detective Rosa Diaz on the cop comedy, says she is "very very in awe of the entire experience" of birth and has already given her child a nickname.

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"It is INCREDIBLE and HARD AF and BEAUTIFUL and EMOTIONAL, and I can't remember ever being this amazed and feeling so overwhelmingly full of gratitude," she wrote. "Roz, you are so cool. #nunafamily #nunapipa #mynuna."

Beatriz and husband Brad Hoss revealed the pregnancy to PEOPLE in June. In the issue, both actors said they are committed to raising a child who believes in equality.

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"I think one of the best things you can do is raise a kid who understands that however a person chooses to shape their one glorious life is worthy of celebration," Beatriz said at the time.

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The In the Heights actress' life is much different now than it was a few years ago. Beatriz previously didn't see herself as the type to settle down. Now, she has a husband, whom she married in 2018, and a child.

Rodin Eckenroth/Getty Stephanie Beatriz

"I didn't think that a committed partnership was really for me," the actress told PEOPLE. "I couldn't really see kids. It wasn't that I was closed off to it. It was more that I couldn't quite see how a baby fit into the life that I was building."

Beatriz, a proud bisexual, also noted that her marriage to Hoss doesn't make her "any less queer… I was able to be my fullest, most authentic self around Brad. He's extremely empathetic and open."