These run true to size for me.  I normally wear a 9 in other brands, and I have several 10s in Fluevogs.  But these are sized a bit big, so I wear a 9 in them.  Beautiful!  I got the brown/kiwi.
UPDATE- Omg, these kill my feet.  So painful.  I have the Gorgeous, too, which also kill.  All of the Operetta series is comfy for me, and some of the Minis, but not these.  So beautiful, though.