I had tried on an 8.5 in other types of Toms and found them to be too narrow.  Reading reviews, theses seemed to run a bit bigger so I ordered an 8 (my usual size in other shoes) and they are perfect. They did seem tight at first, but stretched out within an hour of wearing them. These are cute, comfortable and a perfect alternative to sneakers.  I love the herringbone pattern and the hint of sparkle.