Seamless Underwear Size Guide | LICA Wear Size Chart
Find your seamless
underwear size
Between two sizes? Go with the smaller one. Our SecondSkin fabric is extremely stretchy, and a size that's too big will tend to shift.
This guide applies to our thongs, high-waisted thongs, Brazilian briefs, bikini briefs and high-waisted bikinis.
Size chart
Find your usual pant size, in denim or US sizing, then read the matching LICA size.
| LICA size | Denim | US |
|---|---|---|
| XXS | 22-23 | 00-0 |
| XS | 24-25 | 2-4 |
| S | 26-27 | 6-8 |
| M | 28-29 | 10-12 |
| L | 30-31 | 14-16 |
| XL | 32-34 | 18-20 |
| 2XL | 36-38 | 22-24 |
| 3XL | 40-42 | 24-26 |
Go with the smaller one. The fabric adapts to your body without ever leaving marks, while a size too big slips and shifts.
Find your size
Prefer some guidance? Answer a few questions and we'll recommend a size.
Waist and hip measurements by style
Body measurements, not garment measurements. The same letter corresponds to a different measurement depending on the cut, because the elastic sits higher (high-waisted) or lower (standard cut). If you normally wear a M, you can keep wearing a M, whatever the style.
| Size | Waist in | Hips in |
|---|---|---|
| XXS | 30 | 31.5 |
| XS | 32 | 34 |
| S | 34 | 36.5 |
| M | 36 | 39 |
| L | 38 | 41.5 |
| XL | 40 | 44 |
| 2XL | 42 | 46.5 |
| 3XL | 44 | 49 |
| Size | Waist in | Hips in |
|---|---|---|
| XXS | 29 | 31.5 |
| XS | 31 | 33.5 |
| S | 33 | 35.5 |
| M | 35 | 37.5 |
| L | 37 | 39.5 |
| XL | 39 | 41.5 |
| 2XL | 41 | 43.5 |
| 3XL | 43 | 45.5 |
| Size | Waist in | Hips in |
|---|---|---|
| XXS | 27 | 31.5 |
| XS | 29.5 | 34 |
| S | 32 | 36.5 |
| M | 34.5 | 39 |
| L | 37 | 41.5 |
| XL | 39.5 | 44 |
| 2XL | 42 | 46.5 |
| 3XL | 44.5 | 49 |
| Size | Waist in | Hips in |
|---|---|---|
| XXS | 25 | 29.5 |
| XS | 27 | 31.5 |
| S | 29 | 33.5 |
| M | 31 | 35.5 |
| L | 33 | 37.5 |
| XL | 35 | 39.5 |
| 2XL | 37 | 41.5 |
| 3XL | 39 | 43.5 |
| Size | Waist in | Hips in |
|---|---|---|
| XXS | 27 | 29 |
| XS | 29.5 | 31.5 |
| S | 32 | 34 |
| M | 34.5 | 36.5 |
| L | 37 | 39 |
| XL | 39.5 | 41.5 |
| 2XL | 42 | 44 |
| 3XL | 44.5 | 46.5 |
Flat measurements
Prefer to compare with a pair you already own? Here are the measurements taken directly on the garment laid flat, without stretching the fabric. A variation of 0.5 to 1 cm is normal.

- 1 Waist: edge to edge, top band
- 2 Side height: from the top to the bottom of the side
- 3 Garment height: measured flat
- 4 Gusset: width at the base
| Size | 1. Waist (cm) | 2. Side (cm) | 3. Height (cm) | 4. Gusset (cm) |
|---|---|---|---|---|
| XXS | 31 | 4 | 18.5 | 3.8 |
| XS | 33 | 4 | 19.5 | 3.8 |
| S | 35 | 4 | 20.6 | 3.8 |
| M | 36.5 | 4 | 21.5 | 3.8 |
| L | 39 | 4 | 22.5 | 4 |
| XL | 41 | 4 | 23.5 | 4 |

- 1 Waist: edge to edge, top band
- 2 Side height: from the top to the bottom of the side
- 3 Garment height: measured flat
- 4 Gusset: width at the base
| Size | 1. Waist (cm) | 2. Side (cm) | 3. Height (cm) | 4. Gusset (cm) |
|---|---|---|---|---|
| XXS | 31.5 | 5 | 21.5 | 5.5 |
| XS | 33.5 | 5 | 22.5 | 5.5 |
| S | 35.5 | 5 | 23.5 | 5.5 |
| M | 37.5 | 5 | 24.5 | 5.5 |
| L | 39.5 | 5 | 26 | 5.5 |
| XL | 41.5 | 5 | 27 | 5.5 |

- 1 Waist: edge to edge, top band
- 2 Side height: from the top to the bottom of the side
- 3 Garment height: measured flat
- 4 Gusset: width at the base
| Size | 1. Waist (cm) | 2. Side (cm) | 3. Height (cm) | 4. Gusset (cm) |
|---|---|---|---|---|
| XXS | 28.5 | 11.5 | 24 | 9 |
| XS | 31 | 12 | 25 | 9 |
| S | 33 | 12.5 | 26.5 | 9 |
| M | 35.5 | 13.5 | 27 | 9.5 |
| L | 38 | 14 | 29 | 9.5 |
| XL | 41 | 14.5 | 30 | 9.5 |
| 2XL | 43 | 15 | 31 | 9.5 |
| 3XL | 45 | 16 | 32.5 | 9.5 |

- 1 Waist: edge to edge, top band
- 2 Side height: from the top to the bottom of the side
- 3 Garment height: measured flat
- 4 Gusset: width at the base
| Size | 1. Waist (cm) | 2. Side (cm) | 3. Height (cm) | 4. Gusset (cm) |
|---|---|---|---|---|
| XXS | 27.5 | 8 | 24 | 4 |
| XS | 30 | 9 | 25.5 | 4 |
| S | 33 | 10 | 26.5 | 4 |
| M | 35.5 | 10.5 | 28 | 4 |
| L | 37.5 | 11.5 | 29 | 4 |
| XL | 40 | 12 | 30.5 | 4 |
| 2XL | 42 | 13 | 32 | 4 |
| 3XL | 45 | 14 | 33 | 4 |
Frequently asked questions
Are your sizes standard?
Yes, our sizes are generally standard. However, if you're between two sizes, choose the smaller one: our SecondSkin fabric is extremely stretchy.
What about the dreaded muffin top?
It won't happen with our underwear. The fabric is stretchy enough to hug your body without squeezing it. On the other hand, a size too big will shift and you might not be happy with it, and that's the last thing we want.
What if the size isn't right once it arrives?
You have 30 days to exchange an unworn, unwashed item, and we ship the new size back to you with no shipping charge. Full details are on our Returns, Exchanges & Warranty page.
Why does the same letter give different measurements by style?
Because the elastic doesn't sit in the same place on the body: higher for a high-waisted cut, lower for a standard cut. The measured circumference changes, but your LICA size doesn't.
Still unsure?
Write to us with your usual pant size and the style you're interested in, and we'll gladly advise you.
Qui est LICA ?
En tant que jeune maman d'un charmant petit garçon prénommé Lincoln, j'ai uni le lien mère-fils, ce qui m'a amenée au délicat nom de LICA.
Our mission
LICA Wear was founded with the aim of liberating women's minds by providing them with a comfort too often overlooked. We understand that underwear forms the foundation of daily well-being. Our collections are carefully designed to make women feel comfortable, elegant, and empowered to achieve their full potential.
Fondatrice
L’entrepreneure Catherine Coreau a fondé LICA Wear en 2022, sa deuxième entreprise, avec une vision claire : offrir des sous-vêtements inclusifs qui allient simplicité, confort et élégance. Maman de deux jeunes garçons, elle s’inspire de son quotidien pour concilier travail, famille et engagement envers des causes qui lui tiennent à cœur, comme la Fondation CHU Sainte-Justine.
Catherine aspire à répondre aux besoins d’un large éventail de femmes, tant par ses créations que par ses pratiques d’emploi. Passionnée par les relations humaines, elle met un point d’honneur à offrir un service à la clientèle chaleureux et personnalisé. Avec LICA Wear, elle vous propose plus que des sous-vêtements : une invitation à vous sentir bien, chaque jour.
Fabrication éthique
Chez LICA Wear, nous croyons qu’un produit ne devrait pas seulement être beau et confortable, mais aussi fabriqué dans le respect de l’humain et de l’environnement.
C’est pourquoi nous collaborons avec une manufacture certifiée BSCI et OEKO-TEX®️, qui garantit des conditions de travail éthiques, des salaires supérieurs à la moyenne locale, et une approche écoresponsable de la production.
Une qualité qu’on ressent — avec une conscience tranquille ☁️
Our commitment to the community
At LICA Wear, every little gesture counts. That's why we donate a portion of our promotional sales to the CHU Sainte-Justine Foundation. As a mom, this is a cause that is deeply important to me. By purchasing an invisible panty, you are also helping to support children and families in Quebec.


















































































































