I just bought this for My favorite little beanpole. DD is 52 ish inches tall and about 55 pounds dripping wet. The size eight shirt fits (although I haven't washed it yet), and the size 8 vest is a bit big, but doesn't look funny. When we bought it, eight was the largest size available. DD is thrilled. She will have some growing room, and had been begging for a vest for a while. I don't think I would have been happy with the size 7, as I think it might have been a bit short. DD is well proportioned/average, just small. Her size eight slim pants usually require that we crank the elastic down around the waist so they will stay up.