1. a new or changed appearance, approach, etc., esp. one characterized by marked departure from the previous or traditional one.
2. (usually caps.) a style of women's clothing introduced by the designer Christian Dior in 1947, characterized by a silhouette with broad shoulders, a narrow waist, a long, full skirt, and often emphasized hips.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.