What is chambray fabric? How is it different from denim?

Chambray is a plain-woven fabric that uses a coloured (usually blue) yarn in the warp and a white yarn in the weft — creating a soft, heathered look that closely resembles denim but is much lighter and more breathable. It is sometimes called "the summer denim."

Chambray kurtas are a growing segment in Indo-western casual wear — they give the "denim look" without the weight and stiffness, making them ideal for summer.