Since a brassiere must be laundered frequently, easy-care fabric was in great demand. These are based on two primary methods, either under the bust or over the bust, and sometimes both. Archived from the original on 3 April Manufacturers cut their bras differently, so, for example, two 34B bras from two companies may not fit the same person.
Australian Bra Size
Band size is measured by dress size instead of underbust. These AUS dress sizes are only based on women with B and C cups, leading to inaccuracy if one chooses a bra based solely on dress size. Circumference of chest, as used in dress size, does not relay information regarding band size or cup size. However there is substantial variation between manufacturers sizing and cup labelling  with many using unique labelling such as Cake  , Lovable  and BodyWise  Bendon notably is the only one employing UK sizing .
However such conversions are essential in larger cup sizes as this market in AUS is met by equal parts UK, US and European manufacturers whose products display sizes in their own countries conventions without local equivalent [See for example the ranges at Blest Bras  and Brava Lingerie  ].
Many local lingerie and large cup bra specialists are themselves confused by differences in cup labelling and offer misinformation. Such misinformation can result in women wearing several cup sizes too small. The bra sizing method of Italy and the Czech Republic I is listed for mostly historical reasons, as most manufacturers have switched to the EU system. In spite of these intrasystem discrepancies, within a particular system, cup sizes still increase linearly.
Do not confuse the following table with a conversion chart, which is above. Women born in Africa and Asia, especially those born in East Asian countries, have the smallest breast volumes. Asian women were found to have an average "A" cup size or even smaller. Bra-labeling systems used around the world are at times misleading and confusing. Cup and band sizes vary around the world. Bra-fitting experts in the United Kingdom state that many women who buy off the rack without professional assistance wear up to two sizes too small.
Manufacturer Fruit of the Loom attempted to solve the problem of finding a well-fitting bra for asymmetrical breasts by introducing Pick Your Perfect Bra, which allow women to choose a bra with two different cup sizes, although it is only available in A through D cup sizes.
There are several sizing systems in different countries. Most use the chest circumferences measurement system and lettered cup sizes, but there are some significant differences.
Many bras available come in only 36 sizes. The UK uses the inch-system, this means that the difference in chest circumference between the cup sizes is always one inch, or 2. Leading brands and manufacturers including Panache, Bestform, Gossard, Freya, Curvy Kate , Bravissimo and Fantasie, which use the British standard band sizes , and so on.
However, some clothing retailers and mail order companies have their own house brands and use a custom sizing system. As a result, their J-Cup is equal to a British standard H-cup. Their H-Cup is roughly equal to a British standard G-cup. Cup labelling methods and sizing schemes are inconsistent and there is great variability between brands. This has introduced further sizing scheme confusion that is poorly understood even by specialist retailers.
Bra-sizing in the United States is very similar to the United Kingdom. Band sizes use the same designation in inches and the cups also increase by 1-inch-steps. However, some manufacturers use conflicting sizing methods. D1, D2, D3, D4, D In , underwear maker Jockey International offered a new way to measure bra and cup size. It introduced a system with ten cup sizes per band size that are numbered and not lettered, designated as , etc.
The company developed the system over eight years, during which they scanned and measured the breasts and torsos of women. Researchers also tracked the women's use of their bras at home.
In very large cup sizes this causes smaller cups than their English counterparts. This system has been standardized in the European dress size standard EN introduced in , but was in use in many European countries before that date. They increase in steps of 2. Japanese sizes are the same as Korean ones, but the cup labels begin with "AA" for a 7.
The French and Spanish system is a permutation of the Continental European sizing system. Since it starts with size 0 for European size 60, the conversion consists of a division by 5 and then a subtraction of The size designations are often given in Roman numerals. Cup sizes have traditionally used a step size of 2. Manufacturers' marketing and advertising often appeals to fashion and image over fit, comfort, and function.
English mechanical engineer and professor John Tyrer from Loughborough University has devised a solution to problematic bra fit by re-engineering bra design Loughborough University. He started investigating the problem of bra design while on assignment from the British government after his wife returned disheartened from an unsuccessful shopping trip.
He theorised that this widespread practice of purchasing the wrong size was due to the measurement system recommended by bra manufacturers. This sizing system employs a combination of maximum chest diameter under bust and maximum bust diameter bust rather than the actual breast volume which is to be accommodated by the bra.
According to Tyrer, "to get the most supportive and fitted bra it's infinitely better if you know the volume of the breast and the size of the back. It's an instrument of torture. The average breast weighs about 0. If a cup is a hemisphere, its volume V is given by the following formula: If the cup is an hemi- ellipsoid , its volume is given by the formula: Cups give a hemi-spherical shape to breasts and underwires give shape to cups.
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Archived from the original on 7 August Retrieved 2 June The basis of this sizing system is supposedly based on dress size. Beware, some Australian brands will completely skip the FF cup and go straight to the G cup size. This can lead to an entire cup of mis-sizing and confusion! If you are size A-D, congratulations! Your cup size will be the same when you convert to Australian cup sizes.
Counting up two sizes on the UK size system, I get to an E cup. Band sizing between the US and AUS sizing systems utilizes similar measurement of chest circumference. This makes our bra sizing struggle so much easier! Make sure you know your ideal bra size before you bother calculating your international sizes and buying new bras!
The Her Room site is a neat resource not only for checking your calculations and other useful links, but they have a selection of international bra brands, too! Check out their perfect Australian bra selection here , and make sure to have your freshly calculated Australian size on hand!
They have a wonderful selection of bras in various patterns, styles, and sizes. Feel free to leave a comment with your favorite brand of Aussie bras, or your favorite website for sourcing them. Have you personally faced any sizing troubles online or in the store? Your email address will not be published. Your US Size Bra sizing takes a ton a patience, and requires trial and error. A quick tutorial for sizing yourself for a bra: The band should be firm and snug around your body, but comfortable to wear.
Standing side-on at a mirror, the band should be horizontal and should not be creeping or pulling up your back. There should be absolutely no poking, rubbing, or digging anywhere.
Calculation of Australian Size
59 rows · International Size Conversion Guide Different sizing used across the globe can be confusing! Use our handy size conversion chart to convert any bra size into your Australian size. Bra Size Converter: AU Bra Size to US, UK, EU, FR, IT Bra Sizes: Let us help you convert UK Bra Sizes to other Bra Sizing Systems. This is useful if you are planning to shop bras on the internet (you can actually save a lot of money!), or if you are going to USA, France, Italy or another country. Australian Bra Size Australian (AUS) Bra Size is used in Australia and New Zealand How to Determine your Bra Size? To determine your bra size (and to find the perfect fitting bra), it is very important that you measure your body carefully. Or maybe a question on Australian bra sizing? Let us hear. Thanks! Note: All our size charts are.