This outfit, which consists of a button-up shirt and shorts, is perfect not only because it will keep you cool in the heat but also because it is extremely comfy and that it looks effortlessly chic. The shorts and shirt are made of linen, which is a material that allows air to circulate, which is just what you need when the temperature is high. The green color of the shirt adds a splash of color to the overall look. Simply match a button-up shirt with a pair of fitted shorts in white and accessorize with a bag in a neutral color, a belt in a tan tone, and white sunglasses.