Bra Fitting Guide

Bra Fitting Guide by Bras N Things

All you need to know about finding the perfect fit, all in one perfect little guide!


Follow these 3 simple steps and you will soon be feeling more comfortable and confident in your new lingerie.  Your clothes will look amazing - the right fitting bra can make you look slimmer by correcting your silhouette and smoothing lines.

1. Band  Check the band follows a horizontal line around your body and is not riding up at the back.  If it rides up after movement, you need to go down a back size.  Make sure it is not too tight, you should be able to fit two fingers between your skin and your bra band.  If you can't, or it's difficult to get your fingers underneath, you need to go up a band size.  Your band should be providing the majority of the support, around 80%.

2. Straps   After adjusting the straps to a comfortable length (you should be able to get two fingers easily between your skin and the straps), make sure they are not leaving red marks or digging in.  If they are, this is a sign that your band is not supportive enough. You may need to go down a back size or choose a different style of bra where the band provides you more support.  If your straps slip off your shoulders, even when adjusted correctly, you might need to go down a band size so the straps sit closer to each other on your back.  You straps should be providing the remaining 20% of the support to provide that extra uplift.

3. Cups  First check the wires within the cup, they should sit flat against your rib cage.  If the wires are pulled away, it is a sign that the cups are too small, or the band is too big.  Next check the fit of the cups.  Wrinkling or gaping suggests that the cups are too big and bulging over the top, bottom or sides suggests the cups are too small.  If you have already got your band size correct, you can simply go up and down a cup size. 


The See Saw Band Theory

If you have the cups right, but need to change your band size up or down, this is where it gets a little tricky.  You'll need to know your sister sizes either side of your band size and this is not as straight forward as you might think.  The see saw band theory is a trick to remembering how to change the band size but keep the cup size the same.  If you get your band right first though, you don't need to worry about the theory.  That's why checking your band is our number 1 step!

So, to work out your surrounding sizes, start at your usual size and whatever you do to the band, do the opposite to the cup.  For example, if you go up a size in the band, go down a size in the cup (10 goes up to a 12 so C drops down to a B, which is exactly the same sizes bust!).  If you go down two sizes in the band, go up two sizes in the cup (12 drops down to a 8 so C goes up to an E, again it is exactly the same sized bust!).


We hope this guide has been helpful in providing you with tips and tricks for finding the perfect fitting bra.  Shop online for Bras so you can try them on in the comfort of your own home and try out your new bra fitting skills!