Im 58 and 140lbs I normally wear a medium bottom but sized up to a large in these because everyone says they run small and I would have to agree, the large fits perfect! I love this bottom it looks exactly like the pic and shows enough cheek without looking too much like an actual thong! There is a seam that runs in the middle of the front that will give you a slight look of a camel toe but Ive found this to the case with any tighter bottoms...kind of hard to avoid it if you have a vagina tbh 