I think the signature bra is 4/5 and that’s most popular, then the ultimate bra is 5/5 which is a bit longer so supposed to be more comfortable. I’ve got one of each and sometimes one feels more comfortable to wear than the other depending on the day and one is clay and the other black so can wear different clothes with them.
Just get your regular band size that you normally wear as the cups are expandable so will fit you ore and post op xx
