My son loves JJ and his Old MacDonald shirt. Runs very small, so I would take a size up if possible. It's very cute and I'll buy another one if he still loves Cocomelon when he goes up to the next size.
Soft Brushed Fleece Crewneck Sweatshirt for π Boys and Girls 4-12 Years - Kid Nation Kids
42 Review
Star Wars, Marvel, and Disney Short-Sleeve T-Shirts for Boys from Amazon Essentials
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Van Heusen Sleeve Dress Poplin
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The Good Day Lab Clean Shield: Ultimate Comfort and Breathability in Tagless 4-Way Stretch Polo
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Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
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π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
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π₯ Stay Warm and Active with Rocky Fleece Thermal Underwear Bottoms for Boys
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Waterproof Cozy-Dry Rain/Snow Pants for π§ Kids by JAN & JUL, with Fleece Lining
64 Review