I don't know who passed NYC the memo, but it is finally summer here. And if you don't know what summer is to NYC, that means it's 90+ during the day and 75 at night for days on end with 80% humidity and nary a cloud in sight. While I can't get away with anything too short or too sheer at work, my weekend uniform has been simplified. A breathable sheer or mesh top, jean shorts, some statement jewelry (lucite is lightweight-perfect for long days!) and a crossbody bag are essential for hot days in the city. Keeping the clothing light helps reflect and not absorb heat, making it easy to bring in color with your accessories.
P.S.-don't forget SPF!