Well, what's always suprising me is sizing of FLY shoes :-)
Everytime I order a new pair on-line it's a big challange to "catch" the right size.
I own two pairs of this model - the RUBY ones size 3 fits me perfect - total lenght of the insole 23,7 cm, but the same in YELLOW colour is just 23 cm.
Anyway, they look beautifull (especially ruby), very comfortable, full adjusting - what's important as I own skinny feet. Girls, definitely buy them !