Step 1: Find your underband size

With your bra on, measure around your rib cage, directly under your bust. Ensure the tape measure sits firmly against your skin, with no sags or twists. You should be able to slide no more than two fingers under the tape. Make a note of the measured length.

Step 2: Find your cup size

Measure around your body, over the fullest part of your bust.
Ensure you’re standing upright. Make sure the tape measure is level all the way around and sits flat against your bra, without cutting in. Make a note of this measurement as well.

Step 3: Find your bra size

In the bra size chart, find your band size that corresponds to your measurement in step 1. For example, if you measured 74,5 cm under your bust, your band size is 34. Now follow the column down from your band size (34 in this case) and find the row that includes your measurement in step 2. Let’s say you measured 92 cm. This would make your cup size a C. In this case you should try bras in size 34C. Let’s say your measurement in step 2 had been 91 cm. Than you might want to try sizes 34B and 34C.