I wear mostly size 9, sometimes 8.5, and I wear an 8.5 in these boots.  They break in quite nicely; what felt a tiny bit narrow when I first put them on is now a great fit after a week of wearing and no blisters or anything like that.  Right out of the gate I took them to Elko, NV and danced in them all weekend and my feet are happy!  Beautiful, sturdy, and extremely comfortable.