A triangular insert is a type of garment accessory used to create a fuller shape in skirts and dresses. It is usually made of fabric and is inserted into the hem of the garment. The two most common types of triangular inserts are the GORE and the Godet. A GORE is a triangular piece of fabric that is sewn into the hem of a skirt or dress to create a fuller shape. A Godet is a triangular piece of fabric that is inserted into the side seam of a skirt or dress to create a fuller shape. Both the GORE and the Godet are used to add volume and shape to garments.