Vintage dresses pose the problem of finding the perfect form fitting formal dress. This is because measurements of the yester years vary from contemporary measurements. However you could recreate a vintage dress and experienced dressmakers can make replicas for all figure types.

You could try out vintage slim prom dresses that flatter your figure type. No matter what type of figure you have, you can be sure to find styles that suit your body type. If you have a slim figure the illusion of curves can be achieved by drawing attention to your bust line, waist line, or a dress that bells out. You might try dresses that draw attention to your waist with a wrap dress or with sashes. If you are petite you could go with an asymmetrical hemline to make you appear taller.

Halter top gowns flatter lissome frames. A prom dress could feature beaded halter straps that frame the sides of the center shirred bodice and wrap around to crisscross onto the low back. A side front slit skirt could add to the slim look. Alternately a prom gown with beaded spaghetti straps on a plunging neckline with draped vintage look alike fabrics will provide a slim look.  

An Empire Cut prom dress has a high waistline beginning beneath the bust to flow down and suits short figures creating an illusion of height. A Sheath prom dress is a slim costume with light fabric that clings to the body and is perfect choice for tall, thin bodies. An A-line gown has heavy bodices and flows down from the waist to a full skirt providing a slim look.