A common mistake people make when wearing high heels is that they don’t get their feet measured beforehand. In an article in Podiatry Today, Jenny L. Sanders, DPM, recommends remeasuring your feet. It is not uncommon for a woman to be wearing a size seven when her current measurement is actually closer to size nine, especially if a woman has had children or gains or loses a significant amount of weight, Dr. Sanders writes.
Make sure the shoe fits
It’s not enough to know your size: Shoe sizes can vary from brand to brand and some are wider/narrower than others, so make sure you do your research before purchasing. Even shoes within the same brand can come slightly different, so try heels on before you buy them.