Hello Kitty Juniors St Patrick's Day Long Sleeve T-Shirt Hello Kitty juniors long sleeve t-shirt This Is My Lucky Shirt glitter accented print, shamrock sleeve design 60% cotton 40% polyester, fitted cut Officially licensed. JUNIOR sizing, which runs smaller than regular women's sizes. Model is 5' 7" and wearing an X-Large. Measurements laid flat. Medium: 15" flat across chest, 23" sleeves, 25.5" long. Large: 16" flat across chest, 24" sleeves 26" long. X-Large: 18" flat across chest, 25" sleeves, 26.5" long. XX-Large: 19.5" flat across chest, 26" sleeves, 27" long.