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  • aerieYou asked our Fit and Style Expert, Jenny Altman (@iloveagood) about sister sizes! What is a sister size? "It's one size up or down from what you normally wear. For instance, a 32C's sister size is a 34B!" Have a question for Jenny? Email her at askjenny@ae.com or tweet @aerie with #AskJenny! <3

  • raymonaco@stephanie_booone it's one band size up or down and the cup opposite that. For example, 34C is 36B or 32D, depending on what band fits you better! The cup size usually stays the same.
  • cassieoconnell@fillmymemory 36A or a 32C would be your sister size. Try them out. You might prefer one of these over your 34B
  • reina.liang@fillmymemory a 34B would be a 32C or 36A (32C might fit better)
  • mgabster@fillmymemory sometimes it's useful because the bra you want is out of stock in your usual size :), it happened to me a few times
  • kokishin_xoIm a 32C but for me the 34B never work because the cups are too small and the straps too big :/
  • xocboxA sister size means that the cups will be pretty much the same, off like a centimeter. It's the band that really changes and the one with a bigger band will have the bigger cup.
  • alidumin@tinahollen
  • yllekannala@mmilkykiss you could try a 34c using the smallest clasps and buy bras with a hook in the straps so they can come together in the back. That makes the straps shorter than even the shortest availability. It's what I do.
  • yllekannala@mmilkykiss you could try a 34c using the smallest clasps and buy bras with a hook in the straps so they can come together in the back. That makes the straps shorter than even the shortest availability. It's what I do.
  • la_savaneI'm a 28C and always use a 30B. If I try a 32A though, it doesn't work because the band is so big that it literally falls off and the wires are too wide. I'm soooo happy that Aerie got 30 bands though. It has made a world of a difference for me. Thank youuu aerie 😍
  • victorious_lySo a 34a is a 32B?
  • supersarah1314What would sister of 32B be?
  • annie_oh15@nadiak78 remember when you asked me what a sister size was .. Well here ya go!
  • katiejanov@supersarah1314 34a or 30c
  • supersarah1314Thanks @katiejanov !
  • katiejanovI've been wearing both 34b, but I have recently learned that 32c works much better for me since im thinner than a 34 band
  • taylorsadlerrWhat about 32 D
  • taylorsadlerrHave you heard about this @jessieestew
  • iloveagoodHi @victorious_ly and @taylorsadlerr To answer your fabulous @aerie Q's: the sister size for 32d would be 34c or 30e. For a 34a it would be 32b. Best to try the options, but stick with your most accurate size. We want a great fit so you can feel and look amazing! #aeriereal
  • iloveagoodHi @_clothesbeingsold it is one way to help find a great fit @aerie or other lingerie stores. For example, if you were a very full B cup and wanted a demi bra, the C might be a flattering fit. Just like jeans, sometimes your size changes between skinny jeans and looser fits. Thank you!
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