How to Avoid Panty Lines in Leggings: The Squat-Test Guide
Want to know how to avoid panty lines in leggings? Wear seamless, laser-cut underwear in your correct size, in a shade close to your skin tone, with full back coverage that doesn't ride up. Then do a quick squat test in good light before you leave the house. That's the whole trick, and below we show you exactly how to get it right.
From the Cutier Store team: "Why can I still see lines, even in seamless briefs?" is one of the questions we hear most from customers. So we put together the simple fit-and-fabric checks we use ourselves, plus a quick table for every type of legging in your drawer. You can find all the pieces we mention in our women's comfy essentials collection.
Why panty lines show through leggings
Leggings are thin, stretchy and close-fitting. They hug everything underneath, so any ridge or edge becomes visible. Most lines come from one of these five things:
- Thick elastic edges. Sewn-on elastic creates a raised ridge across the bum or hips.
- The wrong size. Briefs that are too small dig in and squeeze. This is the most common cause, even with seamless styles.
- Riding up. Low-coverage backs creep up when you walk or squat, which leaves a diagonal line.
- Contrast colours. Bright or dark underwear shows through pale or thin leggings.
- Thin or shiny legging fabric. Some finishes show every bump, even when your underwear fits well.
The good news is that each one has an easy fix.
How to avoid panty lines in leggings: 6 simple steps
- Choose edge-free underwear. Look for laser-cut or bonded hems with no elastic band. They lie flat instead of creating a ridge.
- Size up if you're between sizes. Seamless briefs should feel smooth, not tight. If the edge presses into your skin, it will show.
- Pick full or contoured back coverage. A shaped back that covers your curves stays in place better than a skimpy cut.
- Match your skin, not your leggings. A nude shade close to your own skin tone disappears best, even under white or pastel leggings.
- Line up the waistbands. Pull your leggings up so the waistband sits over (or just above) your underwear waistband. Two separate edges at different heights create a double line.
- Do the squat-and-light test. Stand with your back to a window or a bright lamp, check the mirror, then do one deep squat. If nothing shows in bright light while you bend, you're ready.
Which underwear works best with each type of legging?
Not all leggings behave the same. Use this quick guide to match your underwear to your outfit:
| Legging type | What tends to show | Best underwear pick |
|---|---|---|
| Thin, light-colour or white leggings | Colour and edges | Seamless brief in a shade close to your skin tone |
| Thick, matte gym leggings | Riding up during squats | Full-coverage seamless brief with an anti-ride-up back |
| Shiny or "wet look" leggings | Every bump and seam | Laser-cut, edge-free brief, sized up if in doubt |
| Ribbed or textured leggings | Very little (texture hides lines) | Any comfy seamless style you love |
| Bodycon dress over leggings | Waistband ridge | Seamless brief with a smooth, flat waistband |
How should seamless underwear fit?
Seamless only works when the fit is right. Here's what a good fit feels like:
- The edges rest flat on your skin, with no pressing or rolling.
- The back covers your curves and doesn't creep up when you walk.
- The waistband sits smoothly without folding over.
- You can squat and stretch without anything shifting.
If you have fuller hips or a pear-shaped figure, a curvy-fit cut gives extra room in the seat. That extra room is what stops the edges from digging in.
Don't forget the top half
A sleek leggings outfit often means a fitted tee, a crop top or a ribbed bodysuit. Bra bands and underwire can show through those too. A smooth, wire-free bra with molded cups keeps the whole look clean from shoulders to ankles. It's the easiest way to nail that polished "gym-to-coffee" outfit.
How to choose: our comfy picks for leggings
These are the pieces our team reaches for when an outfit needs to look smooth:
- Seamless ice silk no-show briefs – laser-cut edges, a 3D anti-wedgie back and a long 100% cotton gusset. Comes as a 3-pack in nude, white, black and lilac combos.
- 3D contour panties with a Curvy Fit option – scalloped laser-cut hems and a molded back, in soft latte and mocha shades. Each pair arrives in its own sealed bag.
- Smooth wireless bra in five colours – molded cups, no underwire and a hidden back hook for fitted tops.
- Wire-free T-shirt bra with side support – higher side wings help smooth the underarm area under snug tees.
Care tips that keep seamless edges flat
Laser-cut edges stay invisible for longer when you treat them gently:
- Wash in cold water inside a mesh laundry bag.
- Skip the tumble dryer. Heat can make thin edges curl.
- Lay flat to dry instead of hanging from the waistband.
Your pre-outfit checklist
- ☐ Seamless, edge-free briefs in your true size (or one up)
- ☐ Shade close to your skin tone
- ☐ Full or contoured back coverage
- ☐ Leggings waistband pulled up over your underwear band
- ☐ Smooth, wire-free bra under fitted tops
- ☐ Squat-and-light test done in the mirror
Once you know how to avoid panty lines in leggings, getting dressed for the gym, errands or a cozy day out takes seconds.
Related read: heading into colder weather? Here's how to style fleece lined tights without sagging, with a handy temperature chart.
Build your smooth, comfy basics drawer 💗
Every Cutier Store order ships free. We dispatch within 24–48 hours, and orders usually arrive in 2–12 days. Shop the seamless 3-pack and say goodbye to lines.
FAQ
Does a thong stop panty lines in leggings?
A thong removes lines across the bum, but it can still leave a line at the hips. Many people find a full-coverage seamless brief just as invisible and more comfortable for all-day wear.
What colour underwear is best under white leggings?
Choose a nude shade close to your own skin tone. White underwear often shows through white leggings more than a skin-tone shade does.
Why do my seamless panties still show lines?
Usually the size is too small, the back is riding up, or the waistbands sit at different heights. Try one size up, a fuller back, and pull your leggings waistband over your underwear band.
Are seamless panties good for the gym?
Yes, a full-coverage seamless style with a back that stays put is a great match for squats and stretches. Look for a breathable gusset for comfort during workouts.
How do I keep seamless underwear looking smooth?
Wash cold in a laundry bag, skip the dryer and lay flat to dry. Heat is the main reason laser-cut edges start to curl.
