Bought xs and S as was not sure if xs would not be too small, however XS firs better. It is tight the xs but nice fitting and S is too big and there is too much material on the back in waistband for me (wrinkling a lot) and a but too much in the front on thighs. It may be due to my height byr still keeping xs. I do not need to have them trimmed xs are exactly to my heel.