This would have been perfect under my pink event dress had it not had thick seems in the butt area. You could easily see them through the dress. Tried it on under a second dress and had the same issue. Would have been a great product as it is the short boy shorts needed for shorter dresses or high slit dresses and...the torso doesnt roll down! but will be returning. This should be seamless. Seamless would also stop the legs from rolling. I usually wear a small in spanx and sized up to a large in these based on reviews to avoid bulging and glad I did. Im 57 and 150lbs. Usually size 4-6 in pants