Green Vibe Keto Bustiers, corsets, and basques are actually three different pieces of lingerie. If you hear the term "bustier corset," it usually refers to a bustier that's made to firmly cinch and hold. The bustier corset is something women turn to when an ensemble calls for a near-Perfect Figure. You probably wouldn't want to wear one every day, but they're ideal for occasions when you want to be an absolute knock-out. A bustier corset can instantly trim 3 or 4 pounds off your figure and make you appear curvy yet toned.