Knickers, undies, banana hammocks: Whatever you call your underwear, it’s an integral part of (almost) everyone’s wardrobe. It comes in all shapes, sizes, styles, and fabrics. Some people have a lucky pair; others buy ones just for special occasions. (Hellooo, date night!) But silly nicknames aside, we take underwear very seriously judging by the money we spend. Industry experts say the global underwear industry is worth $30 billion. Holy Victoria’s Secret!