Dwayne “The Rock” Johnson and long-term girlfriend Lauren Hashian just had the second child together.

Johnson introduced the newest addition to their family, Tiana Gia Johnson, via Instagram on Monday. He shared a heartwarming photo of him holding her skin-to-skin in the hospital. In his caption, he shares that he is excited to welcome “another strong girl into this world.”

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He shared a touching caption about his new baby and Hashian below the photo. He wrote, “I was raised and surrounded by strong, loving women all my life, but after participating in baby Tia’s delivery, it’s hard to express the new level of love, respect and admiration I have for [Lauren Hashian] and all mamas and women out there.

He also made a promise to Tia that he would do anything for her. “To my third and youngest daughter, Tiana Gia – like I did when your two older sisters Simone Alexandra and Jasmine Lia were born, you have my word, I’ll love, protect, guide and make ya laugh for the rest of my life.”

Skin to skin. Our mana. Blessed and proud to bring another strong girl into this world. Tiana Gia Johnson came into this world like a force of nature and Mama @laurenhashianofficial labored and delivered like a true rockstar. I was raised and surrounded by strong, loving women all my life, but after participating in baby Tia’s delivery, it’s hard to express the new level of love, respect and admiration I have for @laurenhashianofficial and all mamas and women out there. Word to the wise gentlemen, it’s critical to be by your lady’s head when she’s delivering, being as supportive as you can.. holding hands, holding legs, whatever you can do. But, if you really want to understand the single most powerful and primal moment life will ever offer – watch your child being born. Its a life changer and the respect and admiration you have for a woman, will forever be boundless. And to my third and youngest daughter, Tiana Gia – like I did when your two older sisters Simone Alexandra and Jasmine Lia were born, you have my word, I’ll love, protect, guide and make ya laugh for the rest of my life. Your crazy dad has many responsibilities and wears many hats in this big ol’ world, but being your dad will always be the one I’m most proud to wear. Oh and one more thing.. you’re gonna love rollin’ in daddy’s pick up truck. #TianaGiaJohnson🌺 #3rdDaughter #BlessesAndGratefulMan #ImInTROUBLE

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The couple had their first daughter, Jasmine Lia, together in December of 2015. Johnson also has a 16-year-old daughter, Simone Alexandra. Simone is from Johnson’s past marriage with Dany Garcia, they split up in 2007.

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They first announced the pregnancy last December by sharing on Instagram that Tiana will finally be a big sister and “finally be the boss.”

Johnson stars in the newly released science fiction movie Ramapage, and has another movie Skyscraper coming out on July 13.