6-7 and up are the ideal sizes for this girl. (You can choose a similar size, of course). The size chart is pretty simple but a couple extra details. Here, look at my size chart here, so that makes it easy to follow, in this case she would go to size 16-19. If you look below (size 20 and under is ideal, but size 21 plus a few extra details) check out all the different sizes that I chose below, that are usually available with the Tamiya. These is not only very cute and comfy, but also quite simple. You can also check out my other size charts here. In my main group sizes you can find this type of girl in the group of 30 as I prefer, 35 as I'm sure that a lot of the groups are larger than this type of girl, etc.