I checked the size chart and ordered a medium size for my 4 year old nephew, a small size for my 2 year old who wears 3-4T and an infant size for my 3 month old. All sizes were larger than expected, but we just tucked the shirts in and it worked. They are comfortable, soft and perfect for our Easter pictures.
Soft Brushed Fleece Crewneck Sweatshirt for π Boys and Girls 4-12 Years - Kid Nation Kids
42 Review
Boys' Long-Sleeve Disney Star Wars Marvel T-Shirts by Spotted Zebra
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Kid Nation Kids' Tagless Long Sleeve V π Neck T-Shirts 4-12 Years - 2 Packs and 3 Packs
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π Hanes Boys' Short Sleeve T-shirt Value Pack (3-pack) - Essential Wardrobe Basics
44 Review