Osino 0163310
This full-coverage underwire bra, non-padded, is designed to provide high support and exceptional comfort. Its lined three-part cups fully embrace the bust, creating a natural shape and optimal lift—even for fuller cup sizes.
Elegant and opaque in design, it blends refinement with modern appeal. The chimney back enhances support and ensures excellent hold throughout the day. Adjustable stretch straps, designed to be seen, add a subtle fashion touch. Delicate bows at the base of the straps and at the center front complete this feminine and sophisticated style.
Timeless and minimalist, Osino features exquisite English embroidery paired with flattering cuts to beautifully highlight the sensuality of your curves.
Care Guide
Gentle care helps preserve the support, shape and delicate details of your lingerie.
Hand wash whenever possible
Wash in cool or lukewarm water with a mild lingerie detergent. Gently clean without rubbing or twisting.
Protect delicate pieces
If machine washing is permitted, fasten hooks, place the item in a mesh bag and select the delicate cycle.
Avoid harsh products
Do not use bleach or fabric softener, as they may damage fibres, lace and elastics.
Air dry
Reshape gently and dry flat or hang away from direct sunlight. Avoid the dryer, iron and direct heat.
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PrimaDonna
Size Guide
Find the size that will give you exceptional support, a precise fit, and lasting comfort.
How to take your measurements
Measure your underbust
Place the tape measure snug directly under the bust. Keep it horizontal and parallel to the floor.
Measure your bust
Place the tape measure loosely around the fullest part of your bust, ensuring you can breathe normally.
Measure your low waist
Place the tape measure at the hip bone level, without compressing the body.
Measure your hips
Place the tape measure around the fullest part of your hips and buttocks.
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 |
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 |
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.
Need help finding your perfect fit? Visit our Virtual Bra Fitter →
Osino 0163310
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