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Jessica Simpson Posts a Rare Family Photo For Son Ace’s 3rd Birthday!

Jessica Simpson went all out for son Ace's third birthday party!

The 35-year-old hosted a dinosaur-themed bash for the toddler, complete with a volcano-shaped cake.

"Ace turns 3 and I feel prehistoric!" the fashion mogul captioned one shot from the event, adding, "Happy Birthday dinosaur! You complete me."

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Jess also posted a rare family photo on Instagram that included daughter Maxwell, 4, and hubby Eric Johnson, 36.

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Happy Birthday dinosaur! You complete me 💚 #3 #aceknute

A post shared by Jessica Simpson (@jessicasimpson) on

This clan is pretty picture perfect! Scroll through the gallery below to see more of Hollywood's cutest kids.