Your bra strap keeps slipping down your shoulder. Your underwire feels like it’s piercing right through your skin, and there's a weird space between your breasts and the cup. We all know what it’s like to wear a bra that doesn’t fit properly. In fact, up to 85% of Australian women might be wearing the wrong size bra.
Finding your size isn’t a one-off job. Your body changes regularly, so it’s worth checking your size regularly, too. And there’s a lack of standardisation in sizes, so knowing your size in one brand does not mean that size will fit you across all brands. So knowing what a bra that fits looks like will help you find the right bra for you. And yes, you do need to get rid of your old faithful bra that has lost its elastic. Experts say if you wear the bra every other day, you should replace it every six months.
We speak to Kirsty McKeown, general manager of merchandise and design at Bendon Lingerie for some bra-fitting tips.
Why is wearing the wrong size bra a problem?
“Wearing the wrong size bra isn't just a minor inconvenience; it can lead to a range of issues that affect your comfort, posture and even how your clothes fit. Common problems include discomfort due to tight bands or straps that dig in, underwires that pinch or poke, and inadequate support that can lead to back, neck, or shoulder pain.”
What are the benefits of wearing the right size bra?
“It can feel like a second skin. It offers proper support, reducing stress on your shoulders and back, and can improve posture.
“A well-fitted bra also enhances the look of your clothes, ensuring your silhouette is smooth and proportionate. Beyond the physical benefits, wearing a bra that fits perfectly boosts your confidence, allowing you to move through your day without giving your bra a second thought.”
Am I wearing the wrong size bra?
“Knowing the signs of a poorly fitting bra is the first step to finding your perfect fit. If your bra band rides up your back, if the cups gape or overflow, or if the straps constantly slip off or dig into your shoulders, it's time for a change.
“And if the centre gore (the part between the cups) doesn't sit flat against your chest, or if you find yourself constantly adjusting your bra throughout the day, these are clear indicators that your current bra isn’t the right size.”
Can I figure out my bra size from home?
Yes, you just need a tape measure and mirror, says McKeown.
“First, measure snugly around your ribcage, directly under your bust, to determine your band size in centimetres. If you measure an odd number, round it to the nearest even number for your band size.
“Next, measure the fullest part of your bust, keeping the tape measure level and comfortable. The difference between these two measurements in centimetres will guide you to your cup size. Generally, for every 2.5 cm difference, you move up one cup size. So, a 2.5cm difference indicates an A cup, 5cm a B cup, 7.5cm a C cup, and so on.”
If you’re shopping online, you can check this “underbust” measurement against the brand’s size. For example, 72–77cm would often be a size 12.
Of course, getting a fitting in a bra shop takes the hassle (and maths) out of the equation.
How do I know when my bra fits correctly?
“A well-fitting bra will have a band that sits level around your body without digging in or riding up. The cups should fully contain your bust without any spillage or gaping.
“Straps should stay in place without digging into your shoulders or slipping off. And importantly, the centre gore should lie flat against your sternum, indicating the cups are the right size and your breasts are fully supported," says McKeown.
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