Cup Sizes Depend on Band Sizes - The Underfashion Club

http://www.frmheadtotoe.com/

Cup sizes aren’t fixed. The volumes of a cup actually depend greatly on the band that supports it. Butterfly Collection has written a great comprehensive description on how cups relate to bands, clearly explains the math and reason behind it, and even created a fantastic chart that makes it all easy to understand! Here’s an excerpt:

“One of our most popular blog posts is ‘Not All D Cups Are The Same’ which explains that the volume of D cups (all cups in fact) gets bigger as the band size gets bigger. This is why a woman wearing a 32E can also wear a 34D because the cup volume is the same, only the band is different. “

http://blog.butterflycollection.ca/2012/09/why-do-cup-volumes-get-bigger-as-band.html