Back at the office, oversized button-down shirts are also frequently spotted. This writer's roomy button-down collection alternates between sky blue and white ... and a roomy front pocket.

Oversized shirts are key for knotting ... it out in the next video below. Fold up your T-shirt in the back. Gather the leftover fabric in the front. Twist the section until it forms a spiral.

But, if you only choose one, make it an oversized tee ... Fold up your T-shirt in the back, pulling the material tight around to the front of your body to keep it in place. Twist the leftover ...