By Faith Cummings
Updated Aug 30, 2017 @ 10:00 am
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Credit: Randy Shropshire/Getty

Josh Duhamel is all for a dance-off.

Little Axl, his son with Fergie, turned 4 years old on Tuesday and there was no better way to celebrate than by showing off father-son moves on the dance floor. Katy Perry's hit "E.T." was the soundtrack for the adorable battle.

Duhamel tagged Fergie in the caption and wrote: "I can't think of a better way to celebrate a 4th birthday. Happy birthday Axilito!"

The Double Dutchess singer used social media to show her excitement for her son's big day as well and posted a couple darling selfies with the birthday boy.

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In the first, it's clear that style runs in the family, as Fergie is clad in Ray-Ban and Axl is sporting a tiger-embroidered Gucci shirt. "Happy 4th bday axl jack!!! i love you -mommy 🎂🎂🎉🎉❤💛💚💙💜 #axljack," read the picture's caption.

The Dutchess herself also looked regal with her prince in matching crowns. Naturally, the photo's inscription exclaimed, "#doubletrouble 👑👑 happy 4th bday #axljack."

It seriously does not get any cuter. From the looks of it, Axl definitely had the best birthday ever.