I prefer the bikni style for my shape but they no longer sell them in my size.(10/ 3X) I'm 140 lb 5'5" and normally a size 12/13. I have a flat stomach & a naturally round 44" backside. This style rides up because of the high cut leg opening. They are still a great for summer heat & the best fabric I have yet found for California summers but the style doesn't work for me as I feel like I  want to tug them down so they don't just become a thong.