• Tankinis and bandeau tops shorten the length of the body.
• A one-piece needs an Empire waist or detailing below the bust to reduce the expanse of fabric covering an elongated torso.
• Avoid high-neck tops, which can call attention to the body’s length.
Swimsuits at left: Tropical halter nylon-lycra one-piece, Tommy Bahama, $114; 800-647-8688 or tommybahama.com for stores. Red nylon-lycra bandini ($105) and bottom ($85), St. John Swimwear; sjk.com for stores.Read MoreLess