It's an elegant chic look that I love year round. So here's the million dollar answer to this post... it's wearing a thin black material, as simple as a tank top and trousers or denim. All of the heat is going to start making you wet at your chest and back. If you want to wear black try picking out fabrics like thin cotton and stay away from silks or heavier cotton. Another great choice would be linen because it's so forgiving on those hot days like a mother ******.
Wear all black with confidence like your painting the town with fabulous. I remember the days I used to wear black for work all the time and easily transitioned into parties after work because it's so effortlessly amazing for every occasion. A lot of my accessories are black or grey and it's easy to grab something out the door in a hurry because I know it will match with just about anything I have.
Lastly be you and confident with anything you wear.