These are wonderful boots - very unique style...and most important: they not only look fantastic but they are just downright comfortable! Can wear them all day. The heel is cushioned nicely, too.
I'm a size 9.5 + ("not quite a 10 but a "big 9.5" -- if that makes sense). I also have a wide foot. And - I sometimes have problems with ingrown toenails. In short -- room in the toe area and a not-too-narrow fit all around, is critical.
Because of the above, I often buy 10s to ensure comfort - but such can create its own problems in other areas, of course. Well, I ordered a 10 of THIS boot -- and it's roomy enough that I realized I could've ordered the 9.5 with no problem. So - the boot is sized as it should be.
I'm keeping the 10, as it feels and looks great, I can compensate by tightening the laces at the ankle area, and if I choose to wear thicker socks for winter, it's still comfy.
Based on my experience, even if you have wider feet, you should be able to order your actual size with confidence.