What Does It Mean When Your Bra Underwire Pokes Your Armpit?

The term "underwire" refers to the small, semi-circular piece of wire that’s embedded within the lower edge of a bra cup. It’s primary purpose is to provide additional support and shape to the breasts. However, there are instances where the underwire may cause discomfort or irritation, particularly in the area of the armpits. When the underwire digs into the armpits, it could suggest that the cup size is either too big for your breasts or that you’re wearing the wrong style of bra.

Why Do People Wear Non Wired Bras?

Another reason why people choose non-wired bras is for health reasons. There have been some concerns raised about the potential negative effects of underwires on breast tissue. Some believe that the pressure and constriction from underwires may lead to issues such as lymphatic flow obstruction or even breast cancer.

They tend to be more flexible and can adapt to different body shapes and sizes. This makes them suitable for various activities, such as exercise or sleeping, where comfort and freedom of movement are paramount. Non-wired bras are also commonly worn during pregnancy and breastfeeding, as they provide gentle support without compromising milk production or causing discomfort to sensitive breast tissue.

Many non-wired bras come in a wider range of designs, colors, and fabrics, allowing individuals to express their unique tastes and preferences.

Comparing the Comfort and Support of Non-Wired Bras to Wired Bras

  • Non-wired bras provide flexibility and freedom of movement
  • Wired bras offer enhanced support and shaping
  • Non-wired bras are more comfortable for all-day wear
  • Wired bras may dig into the skin and cause discomfort
  • Non-wired bras are ideal for low-impact activities
  • Wired bras are suitable for high-impact activities
  • Non-wired bras are recommended for those with sensitivities or medical conditions
  • Wired bras provide a lifted and more defined silhouette
  • Non-wired bras are available in a variety of styles and designs
  • Wired bras offer more support for larger bust sizes

When it comes to finding the perfect bra fit, one common issue many women face is having the underwire of their bra cup poking into their armpits. This discomfort can be attributed to wearing the wrong style or a cup size that’s too big. Remember, the underwire should never touch your breasts.

Why Is My Bra Cup Wire Under My Armpit?

If you constantly find your bra cup wire digging into your armpit, it’s a clear indication that something isn’t quite right with the fit or style you’ve chosen. Typically, this discomfort arises when the cup size is too big for your breasts or when you’re wearing a style that isn’t suitable for your body shape. In the realm of bras, a key principle to remember is that the underwire should never come into direct contact with your breasts.

This can create significant discomfort and is a clear sign that you should consider adjusting your bra size. It’s worth noting that cup sizes can vary between brands, so it’s beneficial to get professionally fitted to ensure an accurate size.

How to Properly Measure Your Bra Size

  • Start by wearing a non-padded bra that fits you well.
  • Using a flexible measuring tape, wrap it around your torso just under your bust. Make sure the tape is parallel to the floor and snug, but not too tight.
  • Take note of this measurement in inches. This is your band size.
  • To find your cup size, wrap the measuring tape around the fullest part of your bust. Again, make sure the tape is parallel to the floor and not squeezing too tightly.
  • Subtract your band size from your bust measurement to determine the difference.
  • Each inch of difference corresponds to a cup size. For example, if the difference is 1 inch, you’d be an A cup, 2 inches would be a B cup, and so on.
  • If the difference is less than 1 inch, you might consider a AA cup; if it’s more than 6 inches, you might need to try a larger band size.
  • Remember that bra sizes can vary between brands, so it’s important to try on different styles and sizes to find the perfect fit for you.
  • If possible, seek assistance from a professional bra fitter who can help you find the right size.


When worn correctly, the underwire should lie flat against the body without causing any discomfort.