Finding the perfect bra fit can be a game-changer for comfort and confidence. One of the most important aspects of a well-fitting bra is the underband fit. This part of the bra provides most of the support, so getting it right is essential. Many women wear the wrong size because they don’t know how to measure correctly. This guide will walk you through the steps to measure for the ideal bra fit, focusing on the underband and bust measurements.

Why the Underband Fit Matters

The underband is the band that wraps around your ribcage, just below your breasts. It is the foundation of your bra’s support system. If the underband is too loose, the bra will ride up your back and won’t provide enough support. If it’s too tight, it can cause discomfort and restrict breathing.

A good underband fit should feel snug but comfortable. You should be able to fit two fingers underneath the band without it feeling loose. The band should sit level around your body and not ride up when you move.

Tips for a good underband fit:

• Always fasten the bra on the loosest hook when it’s new. This allows you to tighten it as the elastic stretches over time.
• The band should do 80-90% of the support work, not the straps.
• If the band rides up, try a smaller band size.

How to Check Your Underband Fit at Home

You don’t need to visit a store to check your underband fit. Here’s a simple way to do it at home:

1. Put on your bra and fasten it on the loosest hook.
2. Stand in front of a mirror and check if the band is level all around your body.
3. Try to lift the band at the back. It should stay firmly in place and not lift more than an inch.
4. Adjust the straps so they are snug but not digging into your shoulders.
5. Move around and see if the band stays in place.

If the band feels loose or rides up, you may need a smaller band size. If it feels too tight or uncomfortable, try a larger band size or a bra with a stretchier band.

How to measure underband and overbust?

Measuring your underband and overbust accurately is the first step to finding your ideal bra size. You will need a soft measuring tape and a mirror.

Measuring the Underband

To measure your underband, wrap the measuring tape snugly around your ribcage, just below your breasts. Make sure the tape is level and parallel to the floor. Breathe normally and don’t pull the tape too tight. This measurement is your underband size.

For more detailed guidance on the underband measurement, you can visit this helpful resource.

Measuring the Overbust

Next, measure your overbust by wrapping the tape around the fullest part of your breasts. Keep the tape level and not too tight. This measurement helps determine your cup size.

Calculating Your Bra Size

• Subtract your underband measurement from your overbust measurement.
• The difference in inches corresponds to your cup size (e.g., 1 inch = A cup, 2 inches = B cup, etc.).
• Combine your underband size with your cup size to get your bra size (e.g., 34B, 36C).

Measuring tape used for underband and overbust measurement

Common Mistakes to Avoid When Measuring

Many women make mistakes when measuring for a bra, leading to an incorrect size. Here are some common errors and how to avoid them:

• Measuring over clothes: Always measure directly on your skin or over a thin, unpadded bra.
• Using a stiff tape: Use a soft, flexible measuring tape for accuracy.
• Not keeping the tape level: Use a mirror to ensure the tape is straight and parallel to the floor.
• Holding your breath: Breathe normally to get a true measurement.
• Ignoring changes in body shape: Your size can change due to weight fluctuations, pregnancy, or hormonal changes. Measure regularly.

Tips for Trying on Bras for the Best Fit

Once you have your measurements, it’s time to try on bras. Here are some tips to ensure the best fit:

• Try different brands: Sizes can vary between brands, so try a few to find the best fit.
• Check the band: It should be snug and level, not riding up.
• Adjust the straps: They should support but not dig into your shoulders.
• Check the cups: Your breasts should fill the cups without spilling over or gaping.
• Move around: Raise your arms, bend over, and jump a little to test support and comfort.

If the bra passes these tests, you’ve found a good fit.