We got this cute swim suit and we LOVE IT! i order the 5/6 because In ER clothes we wear 6/7 because we love them larger so she can wear them longer but in this case I'm not sure she can even wear this swimsuit at all this year. So I am basically out of my money. She LOVES the swimsuit, but I wish I would have went with the 6/7 under the arms are so tight on her and the top is alot shorter!!!