A size 32A bra and a size 32B bra differ primarily in terms of cup volume. The number (32) refers to the band size, which is the measurement around the ribcage just under the breasts. The letter (A or B) indicates the cup size, which corresponds to the difference between the band measurement and the bust measurement.

In this case:

• 32A Bra: The band size is 32, and the cup size is A. This indicates a smaller cup volume, suitable for individuals with a smaller bust measurement in relation to the band size.
• 32B Bra: The band size is still 32, but the cup size is B. A 32B bra offers slightly larger cup volume than a 32A bra, suitable for individuals with a slightly larger bust measurement while maintaining the same band size.

In summary, the main difference between these two bra sizes is the cup size, with 32B having a slightly larger cup volume than 32A while both share the same band size of 32. It’s important to note that bra sizing can vary between brands, so it’s always recommended to try on bras to find the best fit.