Quick answer
Choose the Modalace Bikini briefs for everyday comfort under clothes, and the Animal Allure Bikini briefs for swimwear that stays put in water. For both, start with your usual size and check that the waistband and leg openings lie flat without cutting in.
Why fabric changes the fit you should expect
Modal and swim microfibre behave differently on the body. Modalace uses TENCELTM Modal, a fine fabric that feels smooth and is designed not to show through under clothing. That makes it a strong choice for dresses, trousers, and daily wear where visible lines matter. Animal Allure uses soft microfibre for swimwear, so the same close fit is built for water rather than all-day underlayers.
The practical difference: modal briefs should feel barely there but still secure at the waist and legs. Swim briefs need a slightly firmer hold so they don’t shift when wet. Neither style should leave deep marks or require constant adjusting.
How midi bikini briefs should fit
A midi bikini brief sits between a classic brief and a higher-cut style, covering the hip without riding up. The waistband should rest flat against your skin, and the leg openings should follow your natural crease without pressing into it. If the fabric bunches at the back or the waistband rolls, the size is likely off.
For Modalace, the Rio cut gives comfortable hip coverage and the lace back adds a feminine detail. Because the fabric is fine, check in a mirror under light clothing to confirm it doesn’t show through. For Animal Allure, test the fit by moving around before swimming; the elastic leg openings and waistband should hold without cutting in.
When to size up or down
Size up if the waistband leaves red marks after a few minutes, if the leg openings feel tight when you sit, or if the back panel pulls down. Size down only if the fabric feels loose at the waist or the briefs shift when you walk. Because both styles use elastic trims, a fit that feels slightly snug at first should not be so tight that it digs in.
If you are between sizes, consider how you will wear the briefs. For all-day modal wear, a little more room usually feels better. For swimwear, a secure hold matters more, but it should never cut into the skin.
Decision rules for choosing your bikini briefs
- Choose Modalace if you need everyday invisibility: Pick the Modalace Bikini briefs when you want a smooth, fine fabric under dresses or trousers. Check that the lace back lies flat and the waistband doesn’t roll. Test under your thinnest clothing before removing tags.
- Choose Animal Allure if you need swim-ready hold: Pick the Animal Allure Bikini briefs for pool or beach days. Confirm the elastic leg openings stay in place when you move and don’t cut in. Do a quick squat and twist test before swimming.
- Use your usual size as the starting point: Both styles are designed for a close fit. Order your normal size first, then adjust only if the waistband or leg openings leave marks or feel loose. If between sizes, size up for modal and keep your usual size for swim.
Product facts
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Animal Allure Bikini briefs | 087230-08A035: Soft microfibre with elastic leg openings and waistband for a reliable hold that doesn’t cut into the skin. This makes the Animal Allure a practical swim brief that stays in place without pinching.
Animal Allure Bikini briefs | 087230-08A035
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Modalace Bikini briefs | 082008-08S634: Made from high-quality TENCELTM Modal with a comfortable hip fit and feminine lace on the back. The fine fabric feels smooth and is designed not to show through, so it works well under everyday outfits.
Modalace Bikini briefs | 082008-08S634
Who each style suits
Best for
- Anyone wanting smooth, no-show briefs for daily wear under clothes
- Swimmers who need a secure bikini brief that stays put in water
Not for
- People who prefer a high-cut or cheeky brief with less coverage
- Those who want a cotton or ribbed fabric instead of modal or microfibre
