HOW TO PICK YOUR SIZE? 
Length measurements are found in any of my product`s descriptions. 
Measuring yourself takes only a few moments, and can really help you in choosing the right size for you. 
General rules: If the shoes are closed (anything you would wear with socks) the measurements would be: your foot length + about 1 cm (or 0.4 inches) 
If you are choosing a sandal or a peep toe size (anything that is opened in the front), the measurements would be: your foot length + about 0.5 cm (or 0.2 inches). 
HOW TO MEASURE: 
place a ruler of a measuring tape on the floor, so that "0" touches a wall. Take off tour shoes and socks and stand on the ruler, with your heels pressed against the wall.Measure to your largest toe.

Easy size converter:
42 41 40 39 38 37 36 35 EUROPE
10 9.5 9 8.5 7.5 6.5 6 5 USA
8.5 8 7.5 7 6 5 4.5 3.5 AUSTRALIA
7.5 7 6.5 6 5 4 3.5 2.5 UK