If you can fit more than one finger between your shirt’s collar and your neck, it’s too big for you. Opt for a slim-cut shirt to slim down your silhouette and your shirt sleeve should end at your wrist - any longer or shorter signifies a poor-fitting shirt.
Your shirt cuffs should be narrow enough to sit just above the start of your thumb. If you can fit your hand through the cuff when its fastened, it’s too wide.
