Churidar is most famous in people of North Indian Origin including Pakistani Punjabis and in people of Karachi. Churidars are a variant of the common salwar pants. Salwars are cut wide at the top and narrow at the ankle. Churidars narrow more quickly, so that contours of the leg are revealed. They are usually cut on the bias which makes them naturally stretchy. Stretch is important when pants are closefitting. They are also longer than the leg and sometimes finish with a tightly fitting buttoned cuff at the ankle.