In one sentence, describe what the following article is about:

Dark colors tend to be the most figure flattering. If you go with a black or deep blue suit, it will create a solid silhouette. "Color blocking" suits that feature darker panels, or cut-outs, can also create a curvier or slimmer figure. Thin horizontal lines can create the illusion of an hourglass figure. Thin vertical lines are even better if you would like to appear taller and slimmer. While thick vertical lines are figure flattering, it's best to avoid wide horizontal lines, as they can make your torso look wider, too. Avoid wide vertical lines, as they will make your suit look like an athletic jersey. You can also mix-and-match swimsuit separates. Pairing a solid bottom with a striped top with enhance the look of your bust. Large geometric prints or big floral patterns are not as figure flattering. However, small prints or patterns will help to create a streamlined figure. Polka dots, for example, are a very flattering minimalist print. Ruching or fabric gathers on a suit can create the appearance of a slimmer waist, if the ruching appears on the middle torso of the suit. A swimsuit with all-over textured fabric layers can also draw attention away from your torso. These suits contain an extra inner liner that streamlines your silhouette. A suit with shapewear is also a good option if you want to be active in a suit, while also looking slim. You can expect to pay a bit more for suits that feature extra support features, such as shapewear. You can also purchase a suit with a strong underwire if you have a larger bust. You can even apply waterproof medical tape across their cleavage (hidden under the suit) to create additional lift.

Summary:
Choose a good color. Go with flattering lines. Look for smaller prints. Look for ruching and texture. Choose a suit with shapewear.