Shay Mitchell finally revealed her baby's name, along with the first official photo of her daughter, via Instagram.

The Pretty Little Liars star, who welcomed her first child with boyfriend Matte Babel last month, revealed her newborn's name is Atlas Noel in a sweet note on Wednesday (November 6). In it, she gushes about being a mother for the first time and how it's changed her life in a way she didn't know was possible.

"Atlas Noel, In my 32 years of life I thought I had seen a lot of places, experienced a lot of things, met a lot of people and felt love...then came you," the actress wrote. "Truth is I had no idea I was capable of loving anything like this before you arrived. You wonder if that’s just something people say, but it’s as if the chemical makeup of my entire body and soul changed the minute we met."

She continued, "I wake up each day (and also every 2-3 hours ;) still in awe that you are mine, and I am yours. I’m still learning about you and I’ll never grow old of watching you slowly wake up, catch a glimpse of me or your dad and focus intently, almost as if to say 'I know you.' Just know, sweet girl — Whatever you choose to do in this world, whoever you choose to love, wherever you choose to go, I will always be your biggest fan."

"I am already so proud to be your Mama," Mitchell added. "PS. The days of dressing you up as burritos and other snacks has only just begun."

You can see Mitchell's full post and her baby's first photo, below:

Mitchell also posed with her daughter for Vogue and shared why she and Babel landed on the name Atlas, admitting the couple chose the name months before she gave birth, but wanted to keep it a secret.

“A close friend of ours was listing off names for her daughter that she had had a year and a half ago. Then she said Atlas and I looked at Matte, and he looked at me, and I was like, ‘Oh my gosh,’” she told the magazine. “It’s just the perfect name; from that day, we knew it was going to be Atlas. People would ask us, ‘Do you have a name?’ But we were keeping it hidden. I’m sorry to everybody that I lied to!”

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