Catherine Zeta-Jones is celebrating her daughter's milestone birthday by pulling out some rare pics.

The 51-year-old actress posted a throwback with her youngest child, Carys Zeta Douglas, who just turned eighteen this week. Zeta-Jones wrote, "Happy 18th Birthday Carys Zeta! You are everything, and everything is you. Thank you for the joy you bring me."

The slideshow features a rare snap of Zeta-Jones hugging her lookalike daughter as a toddler. A young Carys is seen smiling at the camera while wearing a pink and white tie-shoulder mini dress. The stunning throwback was followed by a current picture of Carys, as well as a message from the 18-year-old to her mom that says: "Thank you for giving birth to me!" To which Zeta-Jones replied, "Oh, giving birth to you was my proudest moment! Wait...Oscar?...No...Definitely YOU [laughing emojis]."

Zeta-Jones noted the text exchange in the rest of her caption, saying, "At 5 am this morning, you texted me to thank me, for giving birth to you. That’s the kind of woman you are. Kind. Your wisdom out numbers your years. Your beauty is deep and your heart is big enough to love and envelop the world, your sense of humor......very important.... is insurmountable. I could go on. Your Japanese needs some work, but that’s doable. I love you angel. Mama."

Carys commented on her mother's post with three red hearts, saying, "I love you my mamma! Thank you for all that you do."

Talk about mom and daughter goals.

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RELATED: Catherine Zeta-Jones Shows Off Her Lookalike Daughter in Rare Photo on Instagram

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