It took some doing to get my correct size.  As others said, when I ordered according to size (8), the 39 just swallowed my foot.  And my foot is wide with a high arch so I thought I would need the full 39.  But the 38 (7-7 1/2) was actually a perfect fit.  I love the shoe in the light gold; it is dressier and classier than the usual sandal. Apparently this shoe fits everyone differently so have patience and be ready to compare sizes!