Demi Moore melts hearts with sweet throwback snap with Rumer on her special day

Demi Moore is celebrating her "first-born" Rumer Willis's birthday.

The doting mom took to her Instagram account on Monday to mark Rumer's special day.

In the celebratory post, the mom of three posted a throwback picture with Rumer when she was a toddler.

In the snap, Moore can be seen with a much shorter haircut, holding little Rumer close to her face, both the mother-daughter duo beaming smiles.

Rumer donned a red shirt with black collars while holding two big apples with her small hands.

Expressing her love for Rumer, Moore gushed in the caption, "Happy birthday to my firstborn, my beautiful Rumer."

She continued, You changed my life the moment you came into it, and I’m forever grateful I get to be your mama."

Moore added, "I love you!"

The sweet celebration came after Moore's youngest daughter Tallulah Willis tied the knot with the love of her life, Justin Acee, on Saturday, August 8.

She posted a glimpse into her daughter's wedding dress fitting moment ahead of her nuptials and penned, "A glimpse into my beloved Tallulah’s wedding dress fitting.

“All the tender moments leading up to her beautiful day are forever etched in my heart. So grateful we were able to share this precious event together as a family.”

Moore also expressed gratitude to the designer of Tallulah's Balenciaga dress, writing, “Thank you Pier Paolo [Piccioli] for designing such a remarkable dress and making my sweet girl’s dreams come true."

Moore is also mom to daughter Scout Willis.