Indian summers are bad, and Mumbai summers are very bad. With the heat and humidity wear fabrics that are breathable.
Wear straight fit or palazzos or dhoti pants to up your style game in summer.
These styles & soft fabrics are mostly suitable for all body types. Just remember few things like where are the design details placed, the pleats on the pants and colour that are suitable for your body type.
To know more on your body type , read Know Your Shape.