(Closed) Buying bras when pregnant. Larger band…smaller cup??

posted 8 years ago in Babies
Post # 3
1813 posts
Buzzing bee

Sometimes it just depends on the brand…I was a 36 in one brand and a 38 in another during pregnancy, at a place that does fittings…the 38 was also a cup size smaller than the 36.  Also, I thought the cup of a 40B is the same cup as a 36D?

Post # 4
3871 posts
Honey bee
  • Wedding: November 1999

I think I remember reading a thread a while back about bra sizes.  Since your body width is getting bigger and not your boobs, that is why when you go up in band size, you have to go down in cup size.  Bra cup are measured by differences in your chest (over bust) and your measurments around your ribcage (under bust).  Here’s a good chart of bra sizes.  http://img.docstoccdn.com/thumb/orig/53823239.png

The other alternative is to get those bra extenders.  Have you tried them?

Post # 5
452 posts
Helper bee
  • Wedding: February 2015

The cup sizes are not all the same.  They are proportionate to the band size like, for instance: a 32C and a 34B are “sister sizes”.  34C = 36B, so on and so forth, so it’s normal!

Post # 9
2280 posts
Buzzing bee
  • Wedding: April 2011

It sounds like you’ve gone up a cup size. πŸ™‚

Post # 11
2280 posts
Buzzing bee
  • Wedding: April 2011

@spraguebride: Yeah, it is kind of strange how it works! If you’ve gone up two band sizes and only down one cup size, you have to figure those ladies are growing! πŸ˜›

Post # 12
1220 posts
Bumble bee
  • Wedding: November 2009

@spraguebride:  You haven’t gone down a cup size if you’re talking how you are.  Someone else said it but a 32D is a sister size to a 36B.  Cup size is relative to the band size in volume.  


I can’t say enough about seeking a professional that can guide you through buying bras while pregnant.

Post # 13
1941 posts
Buzzing bee
  • Wedding: June 2012

I agree with all the PP’s about “sister sizes” I used to work at a bra store, and the sizing is really weird sometimes. I just want to offer up something I hadn’t seen: do not buy too many bras! chances are you are not done growing, and your post-pregnancy size may or may not be different than your pre-pregnancy size. Also don’t wear a bra two days in a row, the bra needs 24 hours to “breathe” in between wears to gain it’s stretchy back πŸ™‚

Post # 14
2695 posts
Sugar bee
  • Wedding: February 2008

I went to a bra store and had them fit me and I had a range of band sizes + cups that all worked.  I thought having someone help fit me was great!  The sales woman also helped find something that would work through the pregnancy as she knew I would probably continue to grow and wouldn’t want to keep buying new bras.

Post # 16
519 posts
Busy bee
  • Wedding: August 2008

I went to Motherhood Maternity and bought a couple of bras. I too was surprised that I had to go up in band size and down in cup size. Who knew? I ended up with a 40C. You also want to make sure that when you buy your bras that they are fitting on the hook that makes them smallest around, that way you have room to grow. πŸ™‚

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