Research has shown that 80% of women are wearing the wrong size, probably because we have tried a bra on that felt ok, then we have adopted that size forever.
When it comes to achieving the perfect fit for a bra there is no science involved. It is very much like buying other items of clothing you can be one size in one shop, then be mortified when you're a bigger size in another shop.
The size grid along with the fitting guidelines are aimed at helping you achieve that perfect fit.
Click Here For Fitting Guidelines 
| Area |
Problems |
Solutions |
| Back strap |
Band rides up at the back |
Require smaller back size, but larger cup size. |
| Bulging at the sides |
Require larger back size, or larger cup size |
| Band digging in |
Require larger back size |
| |
| Shoulder Straps |
Straps keep slipping |
Tighten straps slightly |
| Balcony bra straps are naturally positioned wider than other bras and some women find them difficult to wear |
| Try a style with wider straps |
| Straps digging in (this indicates that the straps are supporting more than the back strap) |
Require smaller back size, but larger cup size. |
| Sagging bustlines (nipples should be positioned halfway between shoulder and elbow joint) |
Tighten shoulder straps.
Chose a firmer fabric, more supportive style. |
| |
| Cups |
Underwires dig in/poke out (underwires should sit flat against the rib cage without causing discomfort) |
Require larger cup size |
| Fabric is wrinkled |
Require smaller cup size |
| Bust flowing out of the cup |
Require larger cup size |
Click Here For Fitting Guidelines