I don't remember having this problem before, but recently, whenever i decide to buy a pair of shoes (which is not that often...), I'm finding it difficult to get hold of size 3...
I've found a nice pair of Clarks clogs, and shop assistant said they do make them in size three, but the three shops i went to didn't have them, they where unable to order them for me, and on Clarks website size 3 isn't even listed as an option, they start from 4.