Heatwave No. 3 is currently gripping the Northeast, making it hard to step outdoors without instantly breaking into a profuse sweat. To add to your rotation of summertime heat-and-humidity-appropriate outfits, why not take a cue from street-style star Caroline Issa? Snapped while attending the menswear shows a few weeks ago, Issa threw on a slinky camisole with a mini for an easy look that will stand up to the blazing sun. Start with a loose, thin-strapped tank in silk (for optimum breathability) and tuck it into a fit-and-flare skirt, creating a body-hugging (yet not stifling) silhouette. The key to elevating these simple pieces is to cinch them with a thick black belt with gleaming hardware. It easily and elegantly camouflages any unsightly fabric bulging and shifting that tends to happen with tucked-in tops. Then finish off with your favorite flat sandal to keep the overall vibe low-key. Click ahead to see three ways to re-create a look that's perfect for days when the mercury rises above 90.