Striped Bikini with reversible bottoms

Top is size D (34-38” bust, 28-36” underbust according to website) Bottoms have no size, tags or anything. I’m guessing they’re a size medium but can’t be certain. Product measures 14.25” across at the hips. Should fit medium to large sized body Originally purchased At Nordstrom’s. Bottoms are reversible according to original tag which I no longer have. Brand rebranded from BCA by Rebecca Virtue to BECCA by Rebecca Virtue