If you have a longer torso you may want to go one size up. I got this for my daughters 10th birthday as a gift and it looks great and will fit her but not for very long. She were a size 10 in clothing it it often has space but this is her only romper so I think her torso is longer like mine. over all it looks great and she was very happy. unfortunately it is still cold in the north east this year so she has not had a chance to go out in it.