I'm usually a 7.5-8; the 8.5's fit me...
923558
Like all the reviews seem to say, these shoes are just too small.  I bought both an 8 and an 8.5 (I'm usually a 7.5-8), but could barely get my foot in the 8 -- and I have a relatively narrow foot!  The 8.5 seems to fit well though, so I am pleased!  Now I just have to return the 8's.
2429848
It is quite possible that  7.5 is a better fit for me than the 8 I ordered The shoes are very comfortable but feel a bit loose on my feet..
2070801
I normally wear an 8 but could probably go to a 7 and a half in these boots. They are just slightly big.
4520320
They run a little big. I wear 7 and they feel like 8
1406595
I normally wear 7.5, but these don't come in half-sizes. The 7 was too small.  The 8 is a little big, but with shoe inserts I can wear them just fine.  They're really cute and comfortable.
1643257
I usually wear 7.5 and got an 8.
A little snug on the width but I have a little bit of a wide foot I guess.
4461490
I knew to buy smaller size . I wear 7 1/2 to 8 in street shoes, I knew to get 5.5 to fit me.
1333428
I actually wear a 8 and have the same shoe in black it was big so 7.5 worked better. I have a narrow foot so that may be the issue. My frye boots are 7.5 the other shoes are 8 and fit great
3368436
I wear a 7 but bought a 7.5.  It's not a huge difference and I actually like them like this.  They are not too tight so I don't feel like my foot is too constricted.
4894593
I am roughly a 6.5 to 7/ I bought a 7 because I might be wearing thick socks...With my thin ankle socks I had a lot of space.
1588027
I am size 7,5 in shoes, and I always buy size 8 in boots. I did the same - bought size 8 and fits perfectly
3869931
I have a pair in black and they're 8.5 and have a very comfy fit. These ones, also 8.5, were a tight fit, not uncomfortable tight, just not as loose as the black ones. My theory is that I need to stretch them out.
612055
I usually wear a size 7 but the 6.5 size is perfect on these shoes.
4642047
These are slippers that you sort of sink into the sole of, and I am somewhere cryptically between a 7 and a 7 1/2 US normally.  When I chose these initially the size said medium was 6.5 to 8 then the confirmation said 7.5 to 8.  I figured they would be a little big.  But until I wore them for about a week, my foot fit them right to the edge.  Now, in regular shoes even if I am between a 7 and 7 1/2 but I tend closer to 7.  So, for someone who was actually an 8, these might be small.
4281539
These are bit roomy for me, and I am a true 6-6.5.  I have added insoles, which make them fit right.
4205465
My feet are 8.5, got the size 8. fit snugly to the feet.
2217
I ordered it for my mom as a gift  who usually wear 7.5 but it fits to me, and I usually wear 8.5.