Holistic Bliss Keto A black cocktail dress can fit any person with the same charm. It can add height and personality to someone who is on the shorter side. It helps in making the body appear slimmer and giving a leaner effect to a body which has more mass, and can accentuate curves and bring out the beauty of a Slim Body to perfection. The ability to mask imperfections and add charm to assets is the one biggest boon of black.