Don't Limit Yourself to a Single Bra Size - You Have Many Options, So Find the Best Fit
Prior to working here at BiggerBras.com, bra sizing was just another term that I just didn't pay much mind to. I would go bra shopping and if the bra looked like it fit then I would buy it. I spent a lot of money doing that because after getting home with my bras and wearing once I would soon realize that they were either too uncomfortable or just not my size at all. They always ended up in my junk drawer.
Proper training and asking lots of questions have taught me the importance of a proper fitting bra. One of the great fitting tips I wasn't aware of is the one about Sister Sizing. What is Sister Sizing? Well, let me try my best to explain it to you. Sister Sizing is a way to find your proper fit in different manufacturers because not all brands cut their bras the same way. This is why there is no such thing as true to size bras.
True to size in one brand is not the same as true to size in another brand.
The great thing about Sister Sizing is that you can find your size in the many great styles available without having to settle for the one that fits the closest to your size. Knowing your Sister Sizing helps a great deal when going from one manufacturer to the next. It is so annoying when you have to try to find your size in the next brand because this can be a tedious task that is time consuming. You have just gotten use to knowing your actual size and now you must try to figure out your size for the new brand. Knowing your Sister Sizing can help you a great deal in this transition. With Sister Sizing you can go up or down in your band without compromising the fit of the cup. This is great news especially when you have found your proper bra size.
One rule to always keep in mind about Sister Sizing is that if the band changes then the cup too must change. The cup changes in order to accommodate the band. One big error that many women make is that they change the band but keep the same cup. That will not work for you. Not changing the cup when you change the band will cause the fit of the cup to be significantly different. For example a 32C bra will not fit the same as a 34C. The cup on the 34C will be larger.
In order to find your Sister Sizing start with your regular bra size.
This is the size you purchase most of your bras in. Try on the new bra, if the band fits too tight around in your regular size then you must go up in the band and down in the cup. Now, if the band fits too loose around in your regular size then you must go down in the band and up in the cup. Let me share my example with you:
My regular bra size is a 38DD.
This is the size I purchase most of my bras in. There are times that when I change the manufacturer of my bras I must change the size as well. This happens because the different bra makers cut their bras differently. If I am a 38DD in Aviana there is a possibility that I would have to get a 40D in Panache because their bands tend to fit me a little tight at times. It all depends on the fit of the band. This is where my Sister Sizing comes in handy. If I try on a bra and it fits me too tight in the band on a 38DD then I go up to a 40D. If the band fits too loose then I would go down to a 36DDD. As you can see the cup changed with the band. So, my Sister Sizes for a 38DD are 36DDD and 40D.
Please see the Chart below to help you find your Sister Sizing: