Underwire bras provide great shaping, support, and lift. They come in all shapes, sizes, and styles, too.But not all underwire bras fit the same way. Some pinch, dig into breast flesh, pop out of casings, or cut off circulation around my torso.

1. Get to know wire lengths and shapes on different styles.

gravitate toward wire lengths that suit my shorter, upper torso, like those found in demi-cup bras. Where breasts rest on the chest, make some underwire styles easier or harder to wear. (For more on wire shapes)

2. Wire width changes across bra band

Wires are larger or smaller as you move up and down in band size. For example, a C cup on a 34 band is equivalent to the volume of a D cup on a 32 band and a B cup on a 36 band. If you’re happy with your band size, but it’s your boobs that are spilling out or squished, you’ll get relief by going up the cup alphabet. Don’t think of it as wearing a bigger size as much as choosing a better wire width to match your lovely breasts.

3. Know your “bra zone” not bra size

You won’t fit in the same cup and band size across all bra brands. How can this be true? Some calculate band size by the measure of your ribcage. Others add 3, 4, or 5 inches to that measurement to get your correct size. But those calculations don’t work for everyone. I’m less than 32” under my breasts but find most 32 bands too tight for my tastes. If I use the Plus 4 band sizing method, a 36 band is way too loose. I’m comfortable in a 34D or DD but know I can move to 32E or 36C territory on occasion.

Related post: Tips for Feeding Bra

4. Look at wire casings and bra construction

Wires vary in quality. They are sewn onto bands using single or multiple stitches. Some brands wrap their wires within the casing. Here are two examples from my lingerie drawer. One casing is sewn on top of the band and the other underneath. These little details can make a huge difference in comfort.

Source: Thebreastlife