PrimaDonna Size Guide

PrimaDonna Size Guide

PrimaDonna

Size Guide

Find the size that will give you exceptional support, a precise fit, and lasting comfort.

How to take your measurements

1

Measure your underbust

Place the tape measure snug directly under the bust. Keep it horizontal and parallel to the floor.

2

Measure your bust

Place the tape measure loosely around the fullest part of your bust, ensuring you can breathe normally.

3

Measure your low waist

Place the tape measure at the hip bone level, without compressing the body.

4

Measure your hips

Place the tape measure around the fullest part of your hips and buttocks.

PrimaDonna Tip: Take your measurements while wearing your best-fitting bra, preferably an unpadded model. Measurements are a starting point; fit may vary by style.

Determine your back size

Measure your rib cage firmly directly under the bust. Round to the nearest whole number.

Canada / US Back Size 30 32 34 36 38 40 42 44 46 48
Underbust measurement 66–69 cm 71–74 cm 76–79 cm 81–84 cm 86–89 cm 91–94 cm 97–99 cm 102–104 cm 107–109 cm 112–114 cm
European size 65 70 75 80 85 90 95 100 105 110
French size 80 85 90 95 100 105 110 115 120 125

Determine your cup depth

Subtract your underbust measurement from the measurement taken at the fullest part of the bust. The difference helps you determine the cup depth.

PrimaDonna Cup B C D E F G H I J K
Bust / Underbust difference 18 cm 20 cm 23 cm 25 cm 28 cm 30 cm 33 cm 36 cm 38 cm 41 cm
Important: PrimaDonna offers a wide variety of cups, and some models may exceed a K-cup. Not all combinations of back sizes and cup sizes are available in every model.

US and UK Cup Conversion

B, C, and D cups are identical. From the next cup size up, the designation may differ depending on the system used.

Canada / US B C D DD DDD G H I J K L M
UK / PrimaDonna B C D E F G H I J K L M
Sister sizes: if the back size is too tight, go up one band size and go down one cup size. For example, sizes 34E, 36D, and 38C have a comparable cup volume.

How to identify a good fit

The back band

It should be firm, horizontal, and stable, without riding up your back or restricting breathing.

The cups

The bust should be fully enclosed, without spillage, gapping, or wrinkling.

The straps

They should stay in place without slipping or leaving deep marks on your shoulders.

The underwires

They should completely surround the breast and rest against the body without pressing into breast tissue.

Panties, shapewear, and swimsuit bottoms

Measure your low waist at the hip bone, then measure the fullest part of your hips.

PrimaDonna Size XXS XS S M L XL 2XL 3XL 4XL 5XL
European size 34 36 38 40 42 44 46 48 50 52
UK size 6 8 10 12 14 16 18 20 22 24
Low waist 74–80 cm 81–87 cm 88–94 cm 95–101 cm 102–108 cm 109–115 cm 116–122 cm 123–129 cm 130–136 cm 137–143 cm
Hips 86–91 cm 92–97 cm 98–103 cm 104–109 cm 110–115 cm 116–121 cm 122–127 cm 128–133 cm 134–139 cm 140–145 cm

Bras in universal sizes

Some specific models are available in sizes XS to L rather than separate back and cup sizes.

Universal Size XS S M L
Corresponding sizes 32A, 32B, 34A 32C, 34B, 36A 32D, 34C, 36B, 38A 32E, 34D, 36C, 38B

Swimwear

For swimsuit bottoms and swimsuits without distinct cups, use the panty chart. For bikini tops, tankinis, and one-piece swimsuits offered by cup, use your usual PrimaDonna bra size.

Swimwear Size XS S M L XL 2XL 3XL 4XL 5XL
European size 36 38 40 42 44 46 48 50 52
UK size 8 10 12 14 16 18 20 22 24

Choosing by product type

Full-coverage bras

Ensure the entire breast is fully enclosed and the top of the cup rests flat without cutting into the breast.

Plunge bras

The lower center gore must remain stable against the sternum and the breasts must remain well contained.

Molded bras

The cup should hug the breast without gapping, wrinkling, or compression.

Wireless bras

The back band should provide the bulk of the support while remaining comfortable.

Panties and shapewear

Choose based on your largest measurement. Do not size down to achieve more compression.

Bodysuits

Start with your bra size, then check the waist and hip measurements.

Swimwear tops

For models with cup sizes, use your usual PrimaDonna bra size.

One-piece swimsuits

Check bust, low waist, and hips. If you are between sizes, choose the larger measurement.

Hesitating between two sizes?

Available sizes vary by collection and model. Our team can help you choose the PrimaDonna size that will offer the best support and comfort for your figure.