MrsKoala
I've just posted the following on your thread too.
Fellow bra gurus Would a version of this be any good for the blog?
An update of something I posted before.
A few words about differing cup sizes and how to manage them
You do not always necessarily have to pad the smaller cup to balance the bra out. I'm about a cup and a half different and never use fillets. The trick is to choose styles that can disguise it. The hardest style tends to be soft, balconettes that slope rather than sit almost horizontally across the top of the cup IME, as they wrinkle and bag at the top where the strap joins.
To balance the smaller side, hoick the smaller breast diagonally towards the top and centre of the cup, as if trying to pull it towards a pendant on your necklace, whilst simultaneously pulling the bottom of the cup in the opposite direction. Try to push any excess fabric towards your body with your fingertips while you are holding your breast on your chin out of the way. In many cases, the material at the bottom of the cup will gather/pucker allowing the breast to sit on it when you let go, thus filling the top of the cup like the fuller side. The empty part of the cup is now at the bottom and so will not show once you are dressed.
Cleo Juna and many slightly padded half cup styles are often good for such disguise. They're also great for loss of volume post weight loss/breastfeeding. Pull the smaller breast forward as before, but in a more horizontal direction away from the armpit.
Tshirt styles that work include Freya Deco, Bravissimo Purity and the Panache Porcelain. These styles are not all so good at gathering under the cup because of the foam, but look fine once dressed.
Fuller cup styles are good, particularly Panache Andorra and Melody full cup. Fantasie side support styles such as Elodie, and non padded Cleo styles such as Meg and Marcie sit particularly well if you need a deeper cup.
Newer Panache styles that are performing spectacularly are the Jasmine and Idina, as they have some stretch lace on the upper part of the cup.
One I'd forgotten until recently is the Charnos Cherub full cup. It's light stretchy lace and the sizing's a bit off but it can perform miracles, even if your breasts are very soft! Go up a band and down two cups e.g. if you are a 32F try a 34DD.
Overall, aim to start off fitting the larger side as closely as possible without any overflow, then fine tune. Firmness in the band is essential to avoid slipping about within the cups..
Nearly every woman I fit has an obvious size difference but in 5 years, I can count on one hand how many times I've needed to suggest adding a filler of any kind.