I used what was listed for my foot size, in size chart and even used a measuring tape to co-ordinate with the chart (which varied from style to style of shoes). When shoes, finally arrived they were too short, by about 3/4 inch. Emailed company - in China - they offered to pay me 1/4 to 1/3 of shoe price to not return. After a lot of back and forth emails they refunded me, what they called 1/2 of shoe price. Had to pay more than that to have shoes professionally stretched. Have cute shoes on site - but business itself, shoddy to say the least.