Посмотрите на 6pm.com и на zappos.com. Там много детской обуви, к каждой фирме есть size chart.Вот, например Uggs Kidshttp://www.zap**pos.com/ugg-kids-bailey-button-youth-greyYouth Size Conversions (6 – 10 years)US_Sizes Euro_Sizes UK_Sizes Inches CM 12.5      30         11.5    7.25"  18.4 13        31         12      7.5"   19.1 13.5      31         12.5    7.625" 19.4 1         32         13      7.75"  19.7 1.5       33         14      8"     20.3 2         33         1       8.125" 20.6 2.5       34         1.5     8.25"  21 3         34         2       8.5"   21.6 3.5       35         2.5     8.625" 21.9 4         36         3       8.75"  22.2 4.5       36         3.5     9"     22.9 5         37         4       9.125" 23.2 5.5       37         4.5     9.25"  23.5 6         38         5       9.5"   24.1 6.5       38         5.5     9.625" 24.4 7         39         6       9.75"  24.8