I bought these tights in the size advertised. I ordered a size 6-8 which should be under 51 inches tall and 62 pounds for a girl. The child opened them and they unfolded as long as the girl's size! A 5ft 6in woman (66 total) picked up her pantyhose and it went from HER waist to the floor - so the length really doesn't add up! He's supposed to be 51 inches tall but fits 66 inches? I don't understand why these tights are this size. The tights are tight and don't stretch as well as 100% nylon tights so I wouldn't recommend them for plus size children unless you are the right size. don't fit well because of the length. If you have a skinny child, one size smaller in length and width will probably fit you. Tights are very soft and cute. They are like the fluffy socks you buy at the store, thick chenille socks. I really want the sizing to be correct as the quality of the tights seems pretty good. I suggest buying from a seller who offers free returns if the size doesn't fit. i work for you Hope that helps.