nightshirt

This garment is characterized by its oversized, tunic-like silhouette, designed primarily for comfort and ease of movement during sleep. It differs from pajamas in that it consists of a single piece rather than a coordinated set of top and bottom.

While historically associated with traditional sleepwear, the term now encompasses a wide range of fabrics from heavy flannel to light silk. It is typically viewed as a more relaxed or domestic alternative to structured loungewear.