Use measurements as a starting point, then assess the band, cups and movement without chasing a universal letter.
Measure before translating labels
The official guide separates the circumference below the bust from the full chest measurement. Use a flexible tape and record the units clearly. Keep the tape level rather than pulling it painfully tight. Measurements give a starting point for the selected chart; they do not remove the need to assess a particular bra on the body.
Stay within one chart at a time
Intimissimi publishes separate market conversions and garment tables. A familiar letter or number can mean something different in another system, and a combined XS/S label is not a universal cup size. Use the product and country you will actually select. Do not solve a mismatch between a model caption and selector by inventing an equivalence.
Assess the band before the straps
Put the bra on and settle the bust into the cups, then examine the band around the torso. It should stay comfortably level in movement. Tightening straps to compensate for a rising band often changes the cup position without fixing the problem. Try another size or cut when the band repeatedly shifts or causes discomfort.
Look at the whole cup boundary
Check for overflow, cutting edges or persistent empty space, including near the underarm. With wires, the frame should surround the breast without resting on its tissue. With a wireless design, check that the cup and neckline still contain the bust when leaning forward. A smooth front photograph is less informative than comfort through several normal movements.
Adjust and repeat the movement test
Set shoulder straps so they remain in place without digging. Raise your arms, sit and reach forward. Put your intended top over the bra to check the resulting neckline and outline. If one side fits differently, assess comfort on both rather than tightening everything to match a symmetrical product image that cannot represent individual proportions.
Keep a useful fitting note
Record product code, market, size, cup construction and what worked with particular clothes. Recheck measurements when comfort changes; there is no obligation to stay with a past size. Replace damaged or stretched pieces rather than treating discomfort as an adjustment you must tolerate. This guide offers garment checks, not a medical diagnosis or a universal conversion formula.
Sources & further information
Independent editorial. Check product details and care instructions with the original source.
