How to Choose Underwear for Your Body Shape, Fit and Posture Support
Written by Megan Marshall. Reviewed by the JulieMay product and garment-tech team.
Quick answer: The best knickers are the ones that fit and feel right for your body shape: high-waisted briefs suit apple shapes and tummy support, mid-rise hipsters suit pear shapes, and cheeky or high-leg cuts suit hourglass figures. Choose breathable organic cotton with a silk gusset for intimate health, as it reduces itching, odour and infection risk. For posture, a back-support bra with a cross-back design gently draws the shoulders back to ease neck, back and shoulder strain.
There's nothing quite like slipping on a pair of knickers that just work, the kind you forget you're wearing. And then there's the other kind that dig in, ride up or roll down. When underwear doesn't fit properly, it can affect your posture, your mood and even how confident you feel. The good news? Finding the best knickers for your body shape, and the right supportive bra for your posture, will banish ill-fitting annoyances for good.
Understanding different body shapes
Body shape is a helpful starting point, though not the whole story. Many people fall loosely into one of five common shapes: apple (fuller through the middle), pear (wider hips, smaller waist), hourglass (balanced with a defined waist), inverted triangle (broader shoulders, narrower hips) and rectangle (straighter lines). These are general outlines. The best approach is to try a few styles and trust how your body feels in them.
Best knickers for your body shape
Apple shape: high-rise briefs like the Snowdrop Full Brief provide gentle tummy support. Pear shape: mid-rise hipsters and soft-legged briefs stay in place. Hourglass: cheeky briefs and high-leg cuts. The Sunbleached Floral Brief has a silk-lined gusset. Inverted triangle: streamlined cotton, silk-lined briefs. Rectangle: sculpted, gently curved silk-cotton briefs.
How to fix common fit issues
- Waistbands that roll: high-waisted styles with a wide, flexible band stay put.
- Constant wedgies: full-coverage hipsters in the right size offer better hold.
- Pinching or red marks: try breathable, stretchy cotton blends.
Choose soft, breathable, supportive fabrics
Organic cotton (especially Pima) is breathable and gentle on sensitive skin; silk is naturally cooling and hygienic; lace is lovely but choose soft cotton lace to avoid scratchiness.
Cotton full briefs: freshness, comfort and intimate health
More women choose cotton full briefs for three reasons: cotton is hypoallergenic, soft against the skin, and absorbs moisture well. Five ways a cotton brief helps your intimate area: 1. It keeps itching and allergies away: moisture, heat and contact with latex or synthetics can cause irritation and contact dermatitis, while a brief like the Snowdrop Silk & Cotton Full Brief (pure silk gusset, 78% organic Pima cotton, 22% stretch silk) minimises that risk. 2. It helps prevent odour: breathable cotton lets skin breathe rather than trapping moisture. 3. It keeps you comfortable all day: Healthline rates cotton as the best fabric for your skin. 4. It reduces infection risk: because moisture encourages yeast, a moisture-absorbing fabric helps keep the area healthy. 5. Choose certified organic: allergy-friendly natural fibres are the best option.
Cotton high-waisted knickers: 5 tips for choosing the perfect pair
1. Consider your body shape: high-waisted knickers flatter curvy and hourglass figures and offer gentle tummy smoothing. 2. Remember sizing varies between brands: one brand's medium is another's large, so stick to brands that publish a size guide. 3. Pay attention to size and design: you don't want a pair you keep pulling up, nor one that digs in; look for a firm elastic waistband. 4. Don't sacrifice style for quality: JulieMay's high-waisted silk & cotton full briefs combine organic Pima cotton with pure silk for pieces that are moisture-wicking, hypoallergenic and pretty. 5. Cotton is the best fabric: breathable, soft and gentle, with structure and support you won't find in low-rise styles.
Posture support: how the right bra helps
Posture is the position in which you hold your body against gravity. A forward-protruding neck and rounded shoulders are signs of a hunchback posture. Slumping tightens the chest muscles, which pull the spine forward, while weakening the upper-back muscles that support good posture. A rounded upper back can restrict breathing, and the most common effects are back, neck and shoulder pain. One of the easiest ways to support better posture is a back-support bra: its cross-compression design gently pulls your shoulders back, and ours are padded across the back so support never comes at the expense of comfort.
Frequently asked questions
How do I know my body shape for choosing knickers?
Most people fall loosely into apple, pear, hourglass, inverted triangle or rectangle shapes. It's a useful starting point, but fit and comfort matter more, so try a few styles and trust how they feel.
Why is cotton underwear better for intimate health?
Cotton is breathable and moisture-absorbing, so it keeps the area drier and cooler than synthetics, which helps reduce itching, odour and the risk of yeast and bacterial infections, especially with a pure silk gusset.
What are the best knickers if mine always roll down or ride up?
For rolling waistbands, choose high-waisted briefs with a wide, flexible band. For riding up or wedgies, go for full-coverage hipsters in the correct size.
Can a bra really improve your posture?
A back-support bra can't replace strengthening exercises, but its cross-back design gently draws the shoulders back, which can encourage a better position and relieve some strain from slumping.
Last updated: June 2026.
