I can't find big knickers that come up high enough on me. It is true that I have a long body but I want big comfortable knickers that come up to my natural waist and don't roll down or ride up my crack when I walk! I want my pants to easily cover my tummy button. I have tried every one of Marks and Spencer's full briefs and have yet to find one that fits the bill. Does anyone out there know where I can find what I'm looking for?