Still wearing two sports bras? There’s a better solution
If you wear two sports bras every time you run, ride, play netball or tackle a HIIT class, you’re definitely not the only one.
For many women with bigger boobs, layering bras feels like the only way to get enough support. One bra lifts, the other squashes, and together they hopefully stop everything moving quite so much.
It can work. Sort of.
The short answer: If you need two sports bras to control bounce, one or both may not be providing the right fit or level of support for your activity. One properly fitted high-impact sports bra designed for a fuller bust may give you better support with less bulk, heat and pressure from extra straps and bands.
Wearing two sports bras is usually a workaround for not having one bra that fits properly and provides the right level of support for your body and activity.
The better solution isn’t necessarily more compression. It’s finding one properly fitted high-impact sports bra designed to support a fuller bust.
Why do women wear two sports bras?
The answer is pretty simple: bounce.
Breasts don’t contain muscle, so they can’t support themselves during exercise. When you run, jump or move quickly, they can move up and down, side to side, and forwards and backwards.
The more movement there is, the more likely you are to experience breast pain, rubbing, pulling through your shoulders or the horrible feeling that your boobs are doing a completely different workout from the rest of you.
Adding a second sports bra creates more compression. For some women, that reduces movement enough to make exercise bearable.
But if you need two bras every time you exercise, it’s worth asking whether either one is giving you the right support to begin with.
What does the research say?
Research into breasts, bras and physical activity has found that women with larger breasts are more likely to experience breast pain during exercise. It also found that wearing a sports bra was associated with less breast pain during physical activity than wearing a standard everyday bra.
That doesn’t mean every sports bra will work for every woman. The support still needs to suit your breast size, shape and activity, and the bra needs to fit correctly.
The problem with doubling up
If wearing two sports bras works for you and feels comfortable, the bra police aren’t coming to arrest you.
But doubling up can create a few new problems:
- Extra heat and sweat: Two layers of fabric can trap more warmth and moisture against your skin.
- More pressure: Two tight bands may feel restrictive around your ribs without necessarily improving the fit.
- Straps digging in: You now have two sets of straps sitting on your shoulders.
- Chafing: More fabric, seams and movement between layers can mean more opportunities for rubbing.
- Uniboob: Layering compression bras may flatten everything without properly lifting or separating your breasts.
- More washing: A minor point, perhaps, but you’re using twice as many bras for every workout.
Most importantly, adding another bra doesn’t fix a band that rides up, cups that are too small or straps that aren’t adjusted correctly.
Two sports bras versus one properly fitted sports bra
| Two sports bras | One properly fitted high-impact bra | |
|---|---|---|
| Support | Usually adds more compression | Designed to control movement in several directions |
| Fit | Doesn’t fix cups or bands that don’t fit | Supports through the correct band, cups and straps |
| Comfort | More fabric, straps, heat and pressure | Fewer layers when correctly fitted |
| Shape | Can create more compression and uniboob | May compress, separate or combine both methods |
What should one high-impact sports bra do?
A high-impact sports bra for large breasts needs to do more than feel tight.
Look for these features:
A firm, supportive band
Most of your support should come from the band around your ribcage, not the shoulder straps.
The band should feel firm and sit level around your body. It shouldn’t ride up your back when you lift your arms or move.
Cups that contain all your breast tissue
Your breasts should sit fully inside the cups with no bulging over the top or escaping near your armpits.
Cups that are too small can make a bra feel tight while still failing to control movement.
Support in more than one direction
Boobs don’t only bounce up and down. Good high-impact support needs to help control movement in several directions.
Some bras achieve this through firm compression. Others use separate cups to support each breast individually. Some combine both methods.
Straps that stay put
The straps should be adjustable and secure without carrying the entire weight of your breasts.
If you have to tighten them until they dig trenches into your shoulders, check the band and cup fit.
Support suited to your activity
A bra that works perfectly well for walking or Pilates may not provide enough support for running, horse riding, netball or HIIT.
The more impact and movement involved, the more support you’re likely to need.
One bra doesn’t have to mean one giant boob
A lot of fuller-busted women assume serious support means being squashed flat into a sweaty uniboob.
That isn’t your only option.
An encapsulation-style sports bra uses separate cups to support each breast individually. This can provide lift and separation while still helping to reduce movement.
For women who prefer underwire support, the Wacoal Simone Underwire High Support Sports Bra is one example.
It uses firm two-ply cups and an external underwire frame to support and separate the breasts. The wire sits on the outside of the cups, so there are layers of fabric between the wire and your skin.
It also has taller side panels to help contain breast tissue near the armpits, moisture-wicking fabric and a breathable mesh back.
It’s designed for high-impact activities including running, horse riding, netball, tennis, aerobics and gym training, and is available in C to FF cups and NZ band sizes 10 to 20.
“The cups fit great and there’s a ton of support and lift. Completely controls any boob movement while playing netball and best of all, no sweaty uniboob.”
Take a closer look at the Simone Sports Bra →
Fit matters just as much as the bra
Even the most supportive sports bra won’t do its job properly in the wrong size.
Before adding a second bra, check the fit of the first one:
- Does the band stay level when you move?
- Are your breasts fully contained inside the cups?
- Does the wire sit around your breast tissue rather than on it?
- Do the straps stay in place without digging in?
- Can you breathe and move comfortably?
- Can you jog or jump without painful or distracting movement?
If the band rides up, the cups gape, breast tissue spills out or you’re constantly rearranging everything, visit our guide to common sports bra fit problems.
What if you prefer a wirefree sports bra?
You don’t have to wear underwire to get serious support.
A firm compression bra can be a great option if you prefer wirefree support, particularly when it has a strong band, full coverage and minimal stretch.
The best choice depends on your breast shape, size, activity and how you prefer a bra to feel. Some women love separate underwired cups. Others feel more secure in firm, wirefree compression.
There is no single “best” sports bra for every fuller-busted woman. The best one is the bra that fits your body, suits your activity and gives you enough support without creating a fresh set of problems.
You can compare our high-impact wirefree sports bras for fuller busts here.
Ready to retire the double-bra system?
You shouldn’t need an engineering degree and two bras just to go for a run.
One properly fitted high-impact sports bra may give you the support you’ve been trying to create by layering two less suitable ones.
If you’re unsure where to start, take your current measurements and use our sports bra fitting guide. You can also ask me for a personalised recommendation.
I’ll help you narrow down the styles most likely to suit your size, shape and favourite way to move.
Stay supported out there,
Alisa, founder & Boob-tamer.
Frequently asked questions
Is it okay to wear two sports bras?
Yes, if wearing two sports bras feels comfortable and gives you the support you need. However, layering can create extra heat, pressure, rubbing and bulk. If you regularly need two bras, it may be worth trying one properly fitted high-impact sports bra instead.
Why do my breasts still bounce in a sports bra?
Your sports bra may not provide enough support for your activity, or the band and cups may not fit correctly. A loose band, cups that are too small or overly stretchy fabric can all allow more movement.
Should a high-impact sports bra feel very tight?
It should feel firm and secure, but you should still be able to breathe and move comfortably. Tightness alone doesn’t guarantee support. The band, cups and straps all need to fit correctly.
Is an underwire sports bra suitable for high-impact exercise?
It can be. A well-fitted underwire sports bra can lift and support each breast separately. The wire should sit around the breast tissue without digging in, rubbing or resting on the breast.
What type of sports bra is best for a larger bust?
Look for a bra-sized style with a firm band, full cup coverage and support appropriate for your activity. Depending on your preferences, that may be an encapsulation bra with separate cups, a firm compression bra or a design that combines both.
About the author: Alisa is the founder of SportsBra.co.nz, an Auckland-based online store specialising in supportive sports bras for fuller busts. She helps women throughout NZ & Australia find the right support for running, gym training, horse riding, walking and everyday movement.