Strapless bras can work great for larger busts, but there are a few key design features to look for, ThirdLove co-founder Ra’el Cohen says. A wider, or taller, band “will provide more support and smoothing properties than a narrow band.” Just as critical: A cup with enough coverage, like a balconette that’s “not too plunging at the neckline,” Cohen explains. High-quality fabrics and design details, like a wider band, silicone grips, and side boning can also help to keep the bra in place, avoiding spillage.