How to take your measurements
Cross sizing can differ depending on your body type.
If you have a larger under bust section, size up the band and reduce the cup size. If you have a fuller bust, size up the cup size, but reduce the band size.
Example: If you wear a size 42D, but have a larger under bust section, the best cross-size would be size 44C. If you are fuller in the bust and not so large in the under bust, the best cross-size would be 40DD."