The Underbust corset is worn around the waist and sits under the bust, i.e., it doesn’t provide any bust coverage. This type of corset can be worn underneath a dress or gown as innerwear/shapewear to get that hourglass silhouette. It can also be worn over the clothes as a fashion accessory. These corsets usually have lacing on the back or front to adjust the size and tightness. Whether you’re wearing it under or over, you will need to wear a bra, as it doesn’t provide any support for breasts.
The Overbust corset covers the bust, starting just under the arms and ending above the hips. This kind of corset provides support to the breasts in addition to cinching in the waist. This type of corset is typically worn as outerwear or over another garment. It’s also popular in lingerie, often with garters and lace detailing.
The 18th Century Overbust corset covers the bust, starting just under the arms and ending near the waist with or without tabs extending down. This kind of corset holds your breasts in place in addition to cinching in the waist. A design feature that sets this apart from a traditional Overbust is the addition of shoulder straps. For a modern woman, this corset is worn as outerwear.