Not every figure looks best in a dress. For hard-to-fit bodies or more casual occasions, dressy separates can do the trick.
Choose one special piece -- a beaded skirt, a sheer embellished shirt, an embroidered jacket -- and mix it with a solid piece in a special occasion fabric (crepe, jersey knit, organza, etc.)
Sharon Stone famously did an offhanded mix at the Oscars once by wearing a Gap mockneck T-shirt with a ballgown.
Take this idea and mix different elements for a fresh look like a simple sweater tank with a beaded skirt or a sheer, beaded blouse with man-tailored trousers.