We weren't counting on swimsuit shopping this late into September, but Ashley Olsen just gave us a good reason to. While on vacation with her sister in France, the style setter looked effortlessly cool in a strapless black one-piece swimsuit. That's it. No bells or whistles, crazy cutouts, or strappy back, just an easy, totally versatile suit that would become a staple in anyone's swimsuit drawer.
So, while we highly encourage some necessary Fall shopping, we also know a good thing when we see it — and sometimes that means shopping for a swimsuit when it's out of season. Read on to see Ashley Olsen show off the perfect suit you just might be missing.