Just that really. I'm generally slim, but my bum is at least a size bigger than the rest of me, and I've got short legs for my height. In Next sizes, my bum is prob a 10-12, my leg length fits happily into petite trousers. Are there any tights out there that I can get over my bum, but won't leave me with Nora Batty wrinkles? (Ideally nice thick tights that are at the cheaper end of the market.) Thanks very much 