Donald Trump may know how to incite a nation, but his daughter Ivanka Trump certainly knows how to melt hearts. On April 10, the mother of three posted a sweet snap on Instagram of her daughter Arabella cradling her newborn son Theodore, who was born on March 27. And here's the kicker -- it just so happens to be National Sibling Day!

Along with the cuddly pic of the siblings, the 34-year-old wrote, "Sunday morning cuddles." So precious!

Sunday morning cuddles 🐥🐣

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On April 4, the gorgeous mom posted a photo of her son Joseph and husband Jared Kushner looking intently at the newest addition to the family. All members of the preppy family seem totally in love with the baby boy.

Sweet moments with baby Theo 💙

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Ivanka posted another image of her hot hubby and her daughter as they held the baby boy in their arms at the hospital.

In the shot, Baby Theo is swaddled in his hospital blanket and is sleeping his proud father's arms. Ivanka wrote: "This is love! #bliss."

This is love! #bliss

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But of course, the image we were most eager to see was of Ivanka holding her newborn baby while at the hospital. Other than the whole hospital gown thing and being in a hospital bed with a baby, you'd never know she'd just given birth -- she looks amazing!

The joyful mom posted the post-labor photo with the caption, "Baby Theodore. My heart is full 💙 #grateful."

Baby Theodore. My heart is full 💙 #grateful

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On April 3, Ivanka announced the big news on Instagram, telling her 840K followers that son Theodore was born on March 27 at 5:43 PM.

The businesswoman Instagramed the birth announcement with the caption, "Jared and I feel incredibly blessed to announce the arrival of Theodore James Kushner. Jared, Arabella, Joseph and I are so excited to welcome this sweet little boy to our family!"

Ivanka and Jared wed in a private Jewish ceremony in October 2009.