You deserve better.

When it comes to undergarments, nothing feels quite as satisfying as wearing a bra that fits properly. A good bra can boost your confidence, improve your posture, and provide much-needed comfort. But how do you know if your bra is truly the right fit?

There are a few key things you should check for to ensure your bra is doing its job—supporting you in all the right ways. Here’s a breakdown of the five things we always check when determining if a bra fits correctly.

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1. Your Support Comes From the Back Band

Contrary to popular belief, the straps aren’t the main source of support—it’s the back band. A well-fitted band should sit snugly around your ribcage without riding up or digging in. It should be firm enough to provide support but not so tight that it’s uncomfortable. If the band slides up your back, it’s likely too loose, and you may need a smaller size. You want the back band to be parallel to the floor.

Remember, the band does about 80% of the work, so getting this right is crucial!

2. Your Breasts Should Fit Fully Inside the Cup

The cups of your bra should completely encase your breasts. If there are any gaps or empty spaces, the cups are too big. On the other hand, if your breasts are spilling out from the sides or bottom, the cups are too small.

A properly fitted cup gives you a smooth, seamless shape and provides the support your breasts need without any discomfort.

3. No Spillage Over the Top of the Bra

We’ve all been there—trying on a bra that gives us that dreaded “double boob” effect. This happens when the cups are too small or cut to shallow for your needs, causing breast tissue to spill over the top.

A good fit will keep everything contained and smooth, with no bulging under your clothes. The top edge of the cup should lie flat against your skin without cutting in.

4. The Underwire Should Not Dig In

Underwired bras are your support best friend, but only if the underwire fits correctly.

It should sit flat against your ribcage and frame your breasts without digging in or causing discomfort. If the underwire pokes, sits on your breast tissue, or feels like it’s stabbing you, it’s a sign that your bra doesn’t fit properly.

The right underwire should feel almost unnoticeable.

5. Straps are useful but not your support

Straps are there to provide additional lift and keep your bra in place, but they shouldn’t carry the majority of the weight.

Adjusting your straps correctly can make a big difference, especially if your breasts are slightly different sizes—a super common occurrence. For asymmetry, choose a bra with adjustable straps or lightly padded cups, allowing you to balance the fit by tightening or loosening as needed.

Comfort is key, so make sure the straps aren’t digging into your shoulders or slipping off during the day.

And when in doubt, get fitted

If you’re struggling to determine your size or feel like something is off, book in a call wth a Primary Professional Fitter.