2013 Top Swimwear and Swimsuit Trends. A few months ago I showed my lovely readers one of the biggest swimwear trend for this season….one-piece bathing suits. While one-piece styles have become quite the sexy “new” look we recognize the fact that two-piece selections are still very much a force to be reckon with. I’ve put together a list of some of the most coveted pieces to grab under the sun this season, whether you like to bare it all, or play it safe. Remember that when choosing the perfect swimwear, patience is key, you may have to try on many different styles before you find the right one. Look below to see what swimwear selections are trending for this season.