How a set should sit
How a set sits is not a size number. It is where the band rests, how the cup holds, and whether the brief line stays put when you move.
On OSHE pieces, start with the band. It should be level, firm enough to carry the cups, and still allow a full breath. If the straps are doing all the work, go up in the cup or down in the band — not both at once without checking the other.
Briefs should clear the hip without cutting in. A shaped back is meant to stay put, not to be pulled up every hour. If a style feels right standing still but not walking, it is the cut, not you.
Sizes are listed on each product. When in doubt, write through Contact with the style name and your usual size.