I've owned 6 pairs of Clark's shoes since 2002, including Clark's, indigo, and privo.  Size 5 always fit me just fine.  Then I noticed last year they had adjusted their sizing, and now a size 5 is way too tight across the top front of my foot!  However, the size 5 length fits, so I can't size up to a size 5.5.  I'm so disappointed because their shoes are so comfortable, even the heeled shoes.  I had to return this pair.

I travel often for work and have to walk a lot in airports, and I have no trouble running for flights or keeping up with longer-legged co-workers in Clark's.  I am so disappointed their sizing changed.