What do you wear when it's within 10 degrees of 100 and you're heading out for a double dinner date? A simple sheath mini dress that breathes. This open-back blue floral sleeveless number was a steal at Franchesca's... the dress was $39. I know, right? I paired the dress with summer white accessories, a pair of easy Tory Miller sandals and a Tory top handle bag. To keep the look breezy and to expose the open back detail, I swept my hair back in a ponytail. I even added a pair of Prada sunnies to finish off the look.