Where can I buy a white strapless bikini?

I want to buy a white, strapless bikini, preferrably one without those bows on the side of the bottom. A bandeau is very ideal but any white, strapless bikini would be good, but the question is, WHERE CAN I BUY ONE?! I need to buy it in-store, and it can't be more than about $30. I've already checked Target, Victoria's Secret, Forever 21, Charlotte Russe, Sears, Nordstroms, Abercrombie, and Hollister. Is there any place that has what I want? Please help, I'm getting desperate! (But not desperate enough to wear a bikini made out of toilet paper, so don't even suggest it...)