Jessica Simpson Throws Son Ace a 'Moana'-Themed Birthday Party -- See the Adorable Pics!

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Happy birthday, Ace Knute!

Jessica Simpson threw her four-year-old son an incredible Moana-themed birthday party over the holiday weekend, complete with the titular exploring hero and Maui wishing Ace a very special big day.

WATCH: Jessica Simpson's Son Ace Turns 4! See the Sweet Birthday Snaps

"What a way for Ace to end his birthday!" Simpson wrote. "Thank you @my1styears for helping him send off all of his friends with a personalized surprise."

How adorable!

The cute celebration should come as no surprise given how reliably awww-worthy Simpson and her husband, Eric Johnson, can be with their kids.

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Watch the video below for the family's sweetest moments.

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