Clay I prioritize lightweight, breathable clothing that allows freedom of movement. Moisture-wicking fabrics are ideal to keep cool while sweating during intense matches. I'll often wear tennis shorts or skorts along with a dry-fit t-shirt or athletic tank top.
Proper footwear with good lateral support is also key. The most important factor is not restricting your range of motion. Choose whatever you find comfortable and cool as temperatures rise during play. Beyond functional performance, having clothes you feel confident in can boost enjoyment of the game as well.