Smallest Size in a Bra and How to Find Yours
Short answer: The smallest size in a bra is not a single number, because a size is made of both a band and a cup. Here we explain how to measure yourself and read the numbers so you can find the smallest size that fits you.
What the numbers on the label mean
A bra size is made of a number and a letter, for example 32B. The number is the measurement around the ribcage under the bust, and the letter describes the cup size in relation to it. The smallest size varies from brand to brand, so the label is only a guide.
Measure under the bust
Put a tape measure around your body just under the bust, pull it flat and snug without squeezing. Note the number. That is your band, and most brands round to the nearest figure. Look at the bamboo bra without underwire and compare its sizes with your measurement.
Measure over the bust
Then measure around the fullest part of the bust, without pulling tight. The difference between the two measurements decides the cup size. The larger the difference, the larger the cup. If the number falls between two sizes, try both and notice which sits better.
The smallest size and small cups
The smallest size at a brand can be A or AA, but not all brands offer it. If your measurement falls below the smallest size, you can check whether a soft top or a stretchy style fits better. Take a look at the bamboo tops for women as an alternative.
Try it on before you are sure
Measuring is a starting point, not an answer sheet. Try the bra on and check that the band sits flat on your back and the cups do not wrinkle or leave a gap. If the band is loose, go down in band but up in cup to keep the cup volume.
Sizes differ from brand to brand
Brands have different cuts, and the same number can sit differently. Always check the size chart for the specific brand and read any notes on whether the style runs small or large. Keep your measurements to hand the next time you order.
Measure again from time to time
Bodies change over time, and a size that fitted a few years ago may not fit any more. Measure again now and then, especially after big changes in weight or after pregnancy, and talk to your doctor if you have pain.
Small things that make a difference
When you have found a size, rotate between several bras so none wears out too fast. If everything works with the rest of the day's clothes, choosing gets easier. For sport you can look at the bamboo tennis socks for women as part of the same set.
Frequently asked questions
Is there an official smallest size
No, it varies from brand to brand. Some start at A or AA while others start higher. Always check the size chart for the specific brand.
Should I measure while wearing a bra
You can measure in a thin bra or without one. Use a tape that lies flat and pull it snug enough to stay still without squeezing.
What if I am between two sizes
Try both sizes on. Pick the one where the band sits flat and the cups cover without wrinkling or leaving a gap.
