Understanding Volume and Cup Size

Volume and Cup Size

This area causes quite a bit of confusion, both pre and post op.  Band size is band size - you can't change that by going up or down in cup size.  But cup volume does vary by band size.  The volume of the cup of a 38C is not the same volume as that of a 36C. It's actually larger. Next time you go shopping, select one style of bra and compare a 38C and a 34C. You'll see they are not the same size in the cups. But if you compare a 38B and a 36C, you'll see the cups are the same size in volume. Below we have compiled a few comparisons that will help you to visualize how volumes work in different band sizes:

This is based around a 38B cup:

Though the band sizes all differ, the actual volume of all of these cups are the same. 

40A
38B
36C
34D
32DD

This is based around a 36B cup:

Though the band sizes all differ, the actual volume of all of these cups are the same. 

38A
36B
34C
32D

This is based around a 34B cup:

Though the band sizes all differ, the actual volume of all of these cups are the same. 

36A
34B
32C

This is based around a 44C cup:

Though the band sizes all differ, the actual volume of all of these cups are the same. 

46B
44C
42D
40DD
38DDD

This is based around a 44B cup:

Though the band sizes all differ, the actual volume of all of these cups are the same. 

46A 
44B
42C
40D
38DD
36DDD

So, in the above example, if you are wearing a 44B cup right now, the actual cups of the other band sizes in the list would in fact fit your breasts. The band size will not fit, but the point is that the volumes are the same in that grouping.