A shift or sheath dress is always appropriate
Jackie frequently relied on two styles of dresses: the shift and the sheath. Each is timeless and works on most body types. A shift falls straight down from the shoulders, skimming the body, while a sheath dress generally has a detailed waistline. The first lady often wore ones with interesting necklines, or accessorized them with a few strands of pearls. Add a matching pair of pumps or sandals for a look that can go from the office to a drink on the beach in no time flat.
These subtle fashion tips can make you look expensive.