Original sentence: Originally, a Central Asian nomadic tunic, or upper body garment, it evolved stylistically in India: it is worn plain or with embroidered decoration, such as chikan; it can be loose or tight in the torso, typically falling either just above or somewhere below the knees of the wearer; it has slits on the sides, also of variable length; it can be worn by both men and women; it is traditionally collarless, though standing collars are increasingly popular; and it can be worn over ordinary pajamas, loose shalwars,  churidars, or less traditionally over jeans
Edited sentence: Originally, a Central Asian nomadic tunic, or upper body garment, it evolved stylistically in South Asia: it is worn plain or with embroidered decoration, such as chikan; it can be loose or tight in the torso, typically falling either just above or somewhere below the knees of the wearer; it has slits on the sides, also of variable length; it can be worn by both men and women; it is traditionally collarless, though standing collars are increasingly popular; and it can be worn over ordinary pajamas, loose shalwars,  churidars, or less traditionally over jeans