This is a dress I bought in Hawaii! The size says 5, and I'm not sure what that is in Japanese sizes, but I think it fit my daughter perfectly when she was about 2 or 3 years old (ノ)・ω・(ヾ) The shoulder straps are adjustable, so I think she can wear it even if she gets a little bigger♪ I've worn it twice ( •́ㅿ•̀ )