7 Common Bra Fit Issues & How to Solve Them

Common bra fit issues.

At ThirdLove, our goal is to help women everywhere find their perfect bra fit — but we know it’s not always that simple. On top of having to consider your own unique breast shape, there are many common fit issues that can determine which bras are best for you and will make your boobs look and feel great.


Bra Fitting Room Quiz


Ever experienced bra fit issues? Read on as we identify some of the most common ones (and their solutions) to help you find your perfect size the next time you go bra shopping. If you would like some more help, take our Fitting Room Quiz to find your perfect size and fit in just a few minutes!


Common bra fit issues.


1. Straps Slipping Off Shoulders

Bra straps slipping off.

Are you always pulling up your straps when you’re wearing your bra? To fix slipping straps, try tightening your bra straps if you haven’t already. Straps can stretch out over time, so we suggest doing this every other month or so.

If tightening your straps doesn’t do the trick, take a look at the style of bra you’re wearing. Did you know that certain styles (Full Coverage and T-Shirt style bras) typically have narrow-set straps that help keep them on your shoulders throughout the day? Other styles, like Balconette and Plunge bras, have wider-set straps and can slip more easily depending on your body type. Take a look at our Bra Style Guide to identify the style you should be wearing.

You should also consider the age of your bra. If you’ve been wearing this bra for a long time, the straps may have deteriorated, stretched out, and lost elasticity over time. It’s time to replace your bra with a new one that will support you comfortably. 


2. Bra Straps Digging In 

Bra straps digging in.

Contrary to popular belief, your bra straps should not be doing all of the heavy lifting — your bra brand should be doing most of the work. If your straps are digging into your shoulders, chances are your band is too big or has stretched out over time. If this is happening to you, consider buying one band size smaller – that might do the trick. (Remember: if you buy a smaller band size than usual, you need to go up one size in your cup. Example, if you’re currently a 36C, your tighter band would be 34D. View our Size Chart to learn more!)

Lastly, if you’re a D cup or bigger, we suggest buying a style of bra with narrower straps, like our 24/7® Perfect Coverage Bra, so that the straps are centered on your shoulders and the weight of your breasts is evenly distributed.


3. Bra Band Riding Up

Bra band rides up in the back.

One of the most common fit issues that women deal with is their bra band riding up on the back. This can be identified by looking in the mirror and checking that the back band is parallel to the ground. This issue is typically a sign that your bra band is too large and that you need to go down a band size.


4. Gaping Bra Cups

Bra cups are gaping.

This is a common issue for women with East West, Asymmetric, Bell Shape, or Slender breast shapes (check out our Breast Shape Dictionary to identify your breast shape). Typically, these women’s breasts rest at the bottom of their cups, leaving room at the top for cup gaping. Some women may also experience that their breasts relax as they get older or after pregnancy and may be on the lookout for the best bras for sagging breasts.

If your bra gaps at the top of the cup, try tightening your bra straps. If that doesn’t work, go down a cup size — your cup may be a little too big. If you don’t think you’re an entire cup size smaller, consider one of our half-cup sizes (our Fitting Room quiz can help you identify if half-sizes may be right for you).

If your cups fit well but there’s still room at the top for gaping, consider a plunge or a push-up style to push your breasts upwards. These cups tend to be cut a little smaller to reduce gaping in the first place.


5. Cup Spillage

Bra cup sides are overflowing.

Ever had your breasts spill out of the sides of a cup? That’s a surefire sign that your cups are too small. This is probably the easiest bra fit issue to fix — just size up in the cup.

Or, if your band doesn’t feel tight enough, you might need to size up in the cup and down in the band. A snug band will pull the wire in your bra back, and allow your breasts to sit in the cup where they belong.

Here’s how to deal with cup overflow:

If your breasts are spilling out of the bra cup, you’re wearing the wrong size bra. Similar to side overflow, cup overflow is easy to fix: trade-in for a bigger cup size and give your breasts some much-needed breathing room! If you’re a 34B, trade up a half-size to 34B ½ or a whole cup size to 34C if you need it. You (and your breasts) will breathe a sigh of relief.


6. Underwire Digging In

Bra wire is sitting on breasts.

There are many issues that underwire can cause. Sometimes, we speak to women whose wires are sitting on their breast tissue. This is a sign of your band being too big — you need to invest in a smaller band size to tighten the fit. (Remember: if you size down in band size, you need to go up in cup size, so that your breasts still have room to breathe. For more information on how this works, check out our Size Chart.) Some women experience their underwire digging into their ribcage or breast tissue - this is a bit trickier to solve for as it could be due to the cup or band size. In this case, we recommend you get resized either at one of our retail stores or online using our Fitting Room Quiz.