How to Wear a Thin Strap Bra
The good news is, a thin strap bra doesn’t have to be completely transparent—as long as you pick the right fit. “Your straps should be snug enough to offer support, but not so tight they dig in or leave unpleasant red dips on your shoulders,” says Winchester. “Over time, these red marks can cause your straps to start to separate from your shoulders,” she adds.
If your straps are digging in, it could be a sign that you’re in the wrong bra size. Try a sister size up (for example, 28F instead of 30D) to find the perfect fit.
For the most flattering results, choose a bra with thin straps that match the color of your top or dress. This will help the bra blend in and not stand out against your torso, so it can look more like a piece of jewelry than a basic undergarment.
Another common mistake is wearing a loose bra band. Your band is where 90% of your breast support comes from, and if it’s too loose, it won’t be able to do its job.
To get the right band fit, wrap a measuring tape around your rib cage, making sure it’s comfortably pulled tight. Then subtract your band size from your bust measurement to find your cup size. The number that’s left over is your cup size, and it’s typically written on the inside of your bra. (To make it even easier, a chart is available that correlates band sizes to their matching cup size.)