Well the only thing that matters is that a 3 year old LOVES it but I wanted to explain it in this review so I went in size 6/7 first Bought thinking it will be small. but they fit normal, they are big for her but look a bit silly so I suggest buying the true size you want because it should be something like a loose t-shirt, basically just a big cotton long sleeve t shirt so i bought it again down a size and it fits much better and it will grow to a larger size, after all i paid 8 bucks for each dress so it was worth it lol Rainbow dresses for winning π