As the name suggests, these go perfectly well with your tanks, tubes, strapless dresses, or racerback T-shirts. Farina advises, “Be careful with a halter neckline. In Europe, we call the American neckline. Avoid it if you have small shoulders, or they will look even smaller. This bra is not the right choice for big breasts and a triangle body shape. However, it sits perfectly on a rectangle and inverted triangle.” Most of the convertibles give you a choice of clear strap, cross-over back, or halter neck, so camouflaging those straps is oh-so-easy!