Does anyone know where I can buy opaque stockings from? I've searched m&s, hof, john lewis etc and just can't find any. I've got m&s velvet opaque tights which are fab but sometimes prefer to wear stockings and have to resort to a fine denier. Have tried hold ups but find they aren't guaranteed to stay up - had to staple a huge pleat in the top one day at work to stop one from falling around my ankle!