A US/UK 32C bra is equivalent to an Australian (AU) size 10C, with the band size (32) converting to 10 and the cup size (C) remaining the same in the Australian system.
Sister sizing takes a 32C and makes it equivalent to a 34B and a 30D too! This gives you so much more scope to explore the world of lingerie styles, sizes and more. Sister Sizes usually run in opposite directions with one-size shifts.
Sister sizes
For an example, a 32C and a 34B are the same cup size. The only difference is the band size. The 34 is a bigger band size than a 32.
An Australian size 32 in clothing usually refers to a men's size M (Medium) or a women's size 14, corresponding to a 32-inch waist, though it's crucial to check the specific brand's chart as sizes can vary slightly between retailers for both men and women. For women, a US size 10 or EU 36 might be an AU 12, making size 14 (32 inches) a bit larger, while for men, AU 32 is consistently a Medium.
A size 32 in jeans typically refers to a 32-inch waist, which often converts to a women's numerical size 12 or 14 (especially in US/AU sizing) or a UK size 14, but it can vary by brand, so always check the specific size chart. For women's clothing, a 32-inch waist usually falls into a size Large or XL range, around a US 12-14 or AU 14.
To measure your Australian bra size, find your underbust band size by measuring snugly around your ribcage (in cm) and your bust cup size by measuring loosely around the fullest part of your breasts (also in cm); then, subtract the band from the bust measurement, where a 12-13 cm difference is an A, 14-15 cm a B, 16-17 cm a C, 18-19 cm a D, and so on, using standard AU band sizes (like 10, 12, 14) and converting the difference to a letter cup size.
The "3 bra rule" is a guideline recommending you own at least three bras for a simple rotation: one to wear, one to wash, and one to rest (in the drawer), allowing elastic to recover between wears to extend the bra's lifespan and maintain fit. This system prevents wearing the same bra daily, which stretches out the elastic and reduces support, helping bras last longer.
Bra Extenders Are Good But with Reservations
It would be good to keep a few bra extenders on hand for emergency situations where they may be needed. However, do not use them as permanent solutions because the bra fit might need reconsideration and you cannot simply fix it with just a band adjustment.
It's not unusual to go up or down a whole cup size during normal breast development. Then, as you get older, you may notice that there is a wider space between your breasts and that the breast themselves have shrunk in size.
10 Signs Your Bra Doesn't Fit – And How to Fix It!
A C cup is generally considered an average to slightly above-average or medium breast size, offering good shape and curves without being excessively large or small, but its appearance depends heavily on your body frame, as it represents a 3-inch difference between bust and band, varying by individual. While A/B cups are smaller and D/DD+ are considered larger, C cups sit comfortably in the middle for many, though perception of "big" varies globally and by personal preference.
A US/UK size 34 in a bra band is an Australian size 12, while a size 36 is an AU 14; for general clothing, a US 12 (AU/UK) often translates to a 34-inch bust (like AU 12), but a size 34 (US/UK) generally corresponds to an AU 12 for bras or potentially an AU 10/12 in other apparel. The size 34 is typically a US/UK measurement, aligning with AU 12 for bra bands, whereas size 12 in AU/UK clothing is a different measurement.
Sister sizes are bra sizes that have the same bra cup volume and underwire size. The difference between sister sizes is the size of the band. For example, the sizes 30D, 32C, 34B and 36A all have the same cup volume and use the same underwire. The difference between those sizes is the band.
A 32C is generally for someone with a 32 inch underbust and a 35 inch bust. A 34A is for someone with a 34 inch underbust and a 35 inch bust. The 35 is coming from your leaning bust measurement - which is generally the best of the 3 bust measurements because that ideally will resemble your bust when it's supported.
The two-finger rule for bras is a quick test to check your band's fit: you should be able to comfortably slide two fingers (stacked or side-by-side, depending on the source) under the band at the back or front. If you can fit more, the band is too loose; if you can't fit two, it's too tight, meaning the band is either not providing enough support or is causing discomfort. A properly fitted band carries most of the breast weight, keeping the bra level and straps from digging in.
Bras that Prevent Breast from Sagging
People with very narrow or sloped shoulders, very close-set breasts, or loose/unfirm breast tissue may not find balconette bras comfortable or flattering, as the wide-set straps can slip, the gore might dig in, and the bra can flatten or create spillage for looser tissue. Full cup or demi-cup bras might be better alternatives for these individuals.
It turns out, over half of women polled thought a C cup was the perfect fit. At the same time, close to 26 percent preferred a B cup. Nearly 2 percent said an A cup was their preferred breast proportion. Notably, men also agreed that a C cup was their ideal size.
For some women, gaining or losing 20 pounds will make them go up or down a cup size; for others, it's more like 50 pounds.
If you have sensitive skin and larger breasts, going braless will allow your skin to breathe better and can prevent skin irritation. If you stop wearing a bra your skin health in your chest area may improve, especially if you often experience body or back acne.
Yes, it is likely that losing weight will affect your bra size, but it does not always guarantee a major size change. Chances are that your band size and cup size will be affected by losing weight. However some women have naturally large breasts that will not change very much through losing weight alone.
To measure your cup size, most retailers recommend you wear your current favorite (i.e. most comfortable) non-padded bra—you want your breasts held in place. Then, measure around the fullest part of your chest. Once you have your bust measurement, you can subtract the numer from your ribcage measurement.
Padded bras usually have wide straps and an underwire, so all of these can give large breasts optimum support. Non-padded bras do not offer as much support, primarily because of no foam lining.