Underbust Measurements

Wrap the tape measure loosely around your underbust, the area directly beneath where your breast tissue connects to your chest. Keep the tape parallel to the ground. It should rest lightly against your skin without digging in.


Place the tape snugly around your underbust, parallel to the ground. Tighten it, as you would want a bra to fit.


Fullest Bust Measurements

Measure the fullest part of your bust while standing, keeping the tape parallel to the ground and without digging into your tissue.


Without a bra on, lean forward so your back is parallel to the ground. Measure the fullest part of your bust while leaning forward, ensuring the tape remains straight.


Without a bra on, lie flat on your back and measure the widest part of your bust.


Remember, this is a starting point! Think of it as the first step on your fit journey. Your 'best fit' size may be a cup or band up or down from here.

The Band

Sits snug and parallel to the floor on the loosest (outermost) hook.

The Cups

Fully contain your breast tissue without spilling or gaping. There should be a smooth edge where the top of the cup meets your skin.

The Center Gore

Tacks against your sternum, comfortably laying flat against your chest.

The Straps

Stay put without digging and provide only ~10% of the support.

The Profile

Creates a smooth, round, and lifted shape that you love!


Size Conversions

Polish brands use different sizing systems - everything from UK to EU to combinations of the two! If you know your size only in a specific brand's sizing system, or if you are curious about size conversions (regardless of how large or small a brand or style runs), here's the detailed breakdown:

Band Sizes

US SIZE
EWA MICHALAK
(EU)
GORTEKS
(EU)
GORSENIA
(EU)
SAMANTA
(EU)
COMEXIM
(UK)
26 - - - - 26
28 60 - - - 28
30 65 65 65 65 30
32 70 70 70 70 32
34 75 75 75 75 34
36 80 80 80 80 36
38 85 85 85 85 38
40 90 90 90 90 40
42 95 95 95 - 42
44 100 100 100 - 44
46 105 - - - 46
48 110 - - - -
50 115 - - - -

Cup Sizes

US SIZE
EWA MICHALAK
(UK)
GORTEKS
(EU)
GORSENIA
(EU)
SAMANTA
(EU)
COMEXIM
(UK)
D D D D D D
DD DD E E E DD
DDD E F F F E
G F G G G F
H FF H H H FF
I G I I I G
J GG J J J GG
K H K K K H
L HH L L - HH
M J - M - J
N JJ - - - JJ
O K - - - K
P - - - - KK

Pro Tips