I have always bought a half size larger for my short man and it has been fine. You work longer and bigger. Bought these in 2xw then compared them to a few other NB styles in 2.5xw and these 2 are the same length as 2.5! Just measure her foot and use exactly what is measured and you should be fine. Hope that helps. Update Ordered again in 1.5 xw and his little toes were done. My first purchase must have been mislabeled. May try again because I need one with velcro function. The leg hasn't grown either.
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