I am exactly the same. When I was choosing Sidi shoes, I ordered both a 39 and a 38.5 (but they were men's), then returned the size 39. The 39 was way too big and the 38.5 fit MUCH betterI could not, however, feel exactly how much the fit was off on the size 39 until I also tried the size 38.5.
Just remember to try them with the thinnest socks possible so it fits your foot the best and that your feet will swell over the course of a long ride.
Hope this helps.




. They're too tight on the left foot on the left side.
TE to the rescue 
I could not, however, feel exactly how much the fit was off on the size 39 until I also tried the size 38.5.
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, I wonder if a mens 40 mega width would fit me then... if the half size is all about the width.
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