Natural fabrics are the best shirt materials for hot weather since they are breathable, light, and comfortable. Avoid chemically treated fabrics that irritate the skin because, during the hot months, they will cause discomfort.
The problem with hot and humid weather is that you get to sweat or perspire a lot but the sweat has nowhere to go because the air around you is laden with moisture. This affects your ability to keep cool and dry.
A tunic top and a pair of leggings are a match made in heaven. If you want to wear leggings outside the house or gym, the best way to style them is using a good tunic top. Fortunately, there are different types of tunic tops so you will be spoilt for choice.