H&M Boys Cotton Shirt

H&M

Child's button-up shirt, Long sleeves, Collared, Very similar light base color (light grey/off-white vs. light blue/grey), Thin vertical stripe pattern matches closely, Stripe color (light blue/grey) is very similar to the perceived darker stripes in source, No visible chest pocket (consistent with source), Overall form factor and style are highly consistent

MANGO Baby Striped Oxford Shirt

shop.mango.com

Long-sleeve button-up shirt, Thin vertical stripe pattern matches closely, Color (light grey/white) is a very close match, Standard collar design is consistent, Overall form factor and style align perfectly

Carter's Boys' Striped Linen Button-Down Shirt

Carter's

Long-sleeve button-up style, Standard collar, Thin vertical stripe pattern, Very similar light blue/grey color with white stripes, White buttons