I tried these boots on in Vancouver. They fit my leg perfectly over skinny jeans. Loved the look and heel height. So I guess you need to be at least 5ft 6 with a slimmer calf. But I wear a small foot size so the larger you go, the wider the calf circumference will get.
They looked beautiful and were comfy to boot! But I was after chestnut slouchy boots, so I gave these amiss.