Young Red Haired Girl With Blue Eyes Wearing Black Lingerie

Origins
The concept of lingerie as visually appealing undergarment was developed during the late nineteenth century. Lady Duff-Gordon of Lucile was a pioneer in developing lingerie that freed women from more restrictive corsets. Through the first half of the 20th century, women wore underwear for three primary reasons: to alter their outward shape (first with corsets and later with girdles or bras), for hygienic reasons, or for modesty. Before the invention of crinoline, women's underwear was often very large and bulky. During the late 19th century, corsets became smaller, less bulky and constricting, and were gradually supplanted by the brassiere, first patented in the 20th century by Mary Phelps Jacob. When the First World War broke out, women found themselves filling in men's work roles, creating a demand for more practical undergarments. Manufacturer began to use lighter and more breathable fabrics.
As the 20th century progressed, underwear became smaller and more form fitting. In the 1960s, lingerie manufacturers such as Frederick's of Hollywood begin to glamorize lingerie. The lingerie industry expanded in the 21st century with designs that double as outerwear. The French refer to this as 'dessous-dessus' which basically means innerwear as outerwear. The boutique Faire Frou Frou, which is an antiquated phrase meaning "show it off", heralds this philosophy by categorizing lingerie as an accessory with details such as straps and lace trim that should be layered and shown as part of one's outerwear.