Where do you buy your swimwear at a reasonable cost that will last a few months and that is fairly plain preferably black control/hold your belly in, modestly cut on the leg, adjustable straps and not so long in body that the gusset flaps around your knees, I have this one but they now longer have my size and have found that they only last a few months before the chlorine rots them and the fabric goes weird and see-through on the back (even with hand washing in a gentle liquid and drying flat)
I have tried Next but their costumes seem baggy on my bum it the top fits, and Lands End costumes had the crutch round my knees, I feel a Tankini might be best but I worry about the top rolling up.