If you've ever reached the end of the day desperate to take your bra off, you're not alone. Many women assume discomfort is simply part of wearing a bra, especially if they have a fuller bust. In reality, the problem is often down to misinformation rather than your body.
For years, women have been told to tighten their straps, stick with the size they've always worn or assume that underwire is the answer to every fitting issue. Unfortunately, much of that advice is outdated.
Learning how to find your bra size properly can make an enormous difference to your comfort, support and confidence. Let's separate fact from fiction.
Myth 1: Your Bra Size Never Changes
Our bodies rarely stay exactly the same throughout our lives, so it makes sense that our bra size doesn't either.
Hormonal changes, pregnancy, menopause, weight fluctuations and even changes in muscle tone can all affect how a bra fits. Yet many women continue buying the same size for years simply because it's familiar.
A good rule of thumb is to measure your bra size every six to twelve months, or sooner if you've noticed changes in how your bras fit. A band that suddenly feels tight or cups that no longer sit comfortably are often signs it's time to check your measurements.
Myth 2: Tightening the Straps Will Fix a Loose Bra
It's an easy mistake to make, but your shoulder straps shouldn't be doing most of the work.
Around 80% of a bra's support comes from the band, which should sit level around your body and feel firm without digging in. If you're constantly tightening your straps, it's worth checking whether the band is the right size or whether the bra itself has simply stretched with wear.
When the band fits properly, the straps are there to fine-tune the fit rather than carry the weight of your bust.
Myth 3: A New Bra Should Fit Best on the Tightest Hook
A well-fitting new bra should fasten comfortably on the loosest hook.
Over time, the elastic in the band naturally relaxes, allowing you to move to the tighter hooks to maintain the same level of support. If you start on the tightest setting, there's nowhere left to adjust as the bra ages.
Think of the extra hooks as extending the life of your bra rather than changing its size.
Myth 4: Underwire Is the Only Way to Get Good Support
Underwire can provide excellent support, but it's only one part of the overall design.
A well-constructed bra with the right band, cup shape and supportive fabrics can offer outstanding support, whether it includes an underwire or not. The best choice comes down to your body shape, your lifestyle and what feels comfortable for you.
A correctly fitted bra will always outperform one that's the wrong size, regardless of whether it has wires.
Myth 5: If It Feels Comfortable Straight Away, It Must Fit
Comfort is important, but it isn't the only measure of a good fit.
If a bra feels exceptionally loose from the moment you put it on, it may not be giving you the support you need. Equally, a bra that feels painfully tight isn't the answer either.
The goal is a secure, supportive fit that feels comfortable throughout the day. You shouldn't be constantly adjusting the band, lifting the straps back onto your shoulders or noticing the bra every time you move.
Myth 6: Once You Know Your Size, Every Brand Will Fit the Same
Unfortunately, bra sizing isn't standardised across manufacturers.
Different brands use different patterns, cup shapes and materials, so you may find that your usual size fits beautifully in one collection but feels completely different in another.
That's why measurements are such a useful starting point—but they're only part of finding the right bra. Shape, construction and personal preference all play a role too.
Myth 7: You Can Find Your Bra Size Just by Guessing
After years of buying bras, it's easy to think you can estimate your size by eye. In reality, even experienced bra fitters rely on measurements alongside assessing how a bra sits on the body.
Two bras labelled with the same size can fit very differently depending on their design, while small changes in your own body can make a noticeable difference to comfort.
If you're unsure, taking a few minutes to measure your bra size is far more reliable than guessing—and it could save you years of wearing the wrong fit.
Find Your Bra Size with Confidence
The biggest myth of all is that bra discomfort is something you simply have to live with.
Once you understand how a supportive bra should fit, everyday niggles like slipping straps, riding bands and overflowing cups become much easier to solve. Finding the right size isn't about chasing a number on a label—it's about finding a bra that supports your body properly and feels comfortable from morning to night.
At BraFitIQ, that's exactly what the personalised fitting process is designed to do. Rather than relying on traditional sizing alone, the BraFitIQ Quiz considers both your measurements and your fit preferences to help you find your bra size with greater confidence and choose bras that are right for you.
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