13 Best Seamless Underwear, Tested & Reviewed 2024

All products are independently selected by our editors. If you buy something, we may earn an affiliate commission.

13 Best Seamless Underwear, Tested & Reviewed by Glamour Editors

Gabrielle Langdon / Brands

Ever slip on leggings or a skirt, only to notice an extremely visible panty line? The best seamless underwear is how you get around this issue. Usually made of whisper-thin, barely there nylon and spandex, these undies give the impression that you’re not wearing any at all, leaving the focus on your ’fit—and not your wedgie. These undergarments are useful additions to any wardrobe, especially as we roll into tricky-outfit season (see sheer wedding-guest dresses and linen pants). There are all sorts of underwear styles, including comfortable thongs, high-waist bikinis, and briefs—and Glamour editors and readers tested them all under our tightest attire to see which were really, truly as invisible as we needed them to be.

Our favorite seamless underwear, at a glanceBest Overall: Gap No-Show Thong, $10Best Thong: Alo Yoga Airbrush Invisible Thong, $18Best Value: Wealurre Seamless Underwear Invisible Bikini (6-Pack), $24Best Brief: Spanx Undie-Tectable Stretch-Jersey Brief, $24Best Boy Shorts: True & Co. True Body Boy Shorts, $12Best for Tummy Control: Aerie Superchill Seamless Thong, $9Best Low-Rise: Victoria’s Secret No-Show Cheeky Panty, $13Most Comfortable: Cuup The Thong, $14All products are independently selected by our editors. If you buy something, we may earn an affiliate commission.

1/13

Gap No-Show Thong

What we love: Ever had that “oops” moment with panty lines? Say goodbye to that with this thong. Sleek and understated, Gap’s No-Show Thong is made of seamless, soft microfiber that’s totally free of elastic. Available in a range of colors from baby pink to black in a variety of multipacks, it’s designed to stay hidden underneath any outfit. Perfect for those who value both comfort and a smooth silhouette.Cons: They run big and stretch over time.Sizes: XXS–2XLMaterials: Nylon, spandexColors: 8 optionsWhat reviewers say: I love Gap underwear, and this thong is my new go-to. It’s super comfortable and doesn’t show at all, even under formfitting leggings and bike shorts. The material is soft and lightweight, and it stays in place all day. Plus, it’s affordable, which means I’ll definitely be grabbing some more. —Andrea Navarro, Glamour special projects writerSave when you shop for the best seamless underwear with these Gap promo codes.

2/13

Alo Yoga Airbrush Invisible Thong

What we love: Alo Yoga’s Airbrush Invisible thongs are designed with a unique blend of performance fabrics, so you’re comfortable as you move. It’s a game-changer for those on the hunt for seamless support, and the odor-resistant thong remains invisible under your tightest yoga pants or everyday looks. If you live in activewear, this is a handy underwear for working out, and its range of skin tones are ideal under light, sheer fabrics.What could improve: Some colors are sold out; no plus sizes availableSizes: XS–XLMaterials: Polyester, spandexColors: 8 optionsWhat reviewers say: Wearing this thong feels almost like wearing nothing at all, which is quite a statement considering how notorious thongs are for their tendency to uncomfortably ride up. What sets it apart is its versatility and stretch level. I find myself reaching for one of these to pair with everything from casual jeans to form-fitting leggings, and this is even my first choice for workout attire when I hit the gym. The seamless design ensures it stays in place, providing a smooth silhouette and peace of mind, no matter the activity. —Francesca Simmons, Glamour reviewerSave when you shop for the best seamless underwear with these Alo Yoga promo codes.

3/13

Wealurre Seamless Underwear Invisible Bikini

What we love: These full-coverage bikini briefs are the ultimate no-show heroes—perfect for those body-hugging dresses or those sleek yoga pants. They’re super soft and comfy, and—let’s be honest—they make your butt look great. It’s like your favorite comfy bikini but with a magic touch of invisibility. Plus, they come in a value five-pack—on sale, each undie is $4.What could improve: Gusset comes loose after multiple washes (at least 10, says our tester)Sizes: S–2XLMaterials: NylonColors: 14 optionsWhat reviewers say: Finally, an invisible bikini that lives up to its name. These bikini briefs are soft, they don’t dig in, and they stay invisible under my tightest jeans. Plus, they’re durable. They’ve been through several washes and still look new. —A.N.Save when you shop for the best seamless underwear with these Amazon promo codes.

4/13

True & Co. Women’s True Body Boyshort Multipack Panty

What we love: True & Co makes some of the best wireless bras in the game, so it should come as no surprise that its underwear is just as good. Our top pick? These stretchy hot-pink boy shorts, because let’s be real—when you’re wearing black leggings or bike shorts, it doesn’t really matter what color panties you have on. They’re durable and ideal for everyday wear.What could improve: Some users reported the sizing is inconsistentSizes: XS–XLMaterial: Nylon, elastaneColors: 15 optionsWhat reviewers say: So these were sized a little bigger than I had thought but very comfortable. No VPL and they feel like you aren’t wearing anything at all. What makes these True & Co undies different from others I’ve tried is the cotton gusset. Most synthetic panties don’t have a cotton gusseted crotch, but these do to give you a little extra absorbency. —B. Wallis, reviewer on AmazonSave when you shop for the best seamless underwear with these Amazon promo codes.

5/13

Spanx Undie-Tectable Stretch-Jersey Brief

What we love: This tummy-control underwear is the ninja of the intimates world—invisible but always there for you. And the strong, edge-free waistband is like a gentle hug around your midsection, smoothing everything out. Whether you’re wearing your favorite skinny jeans or a body-con dress, these briefs make sure you look and feel your best.What could improve: Light supportSizes: XS–XLMaterials: Nylon, elastane, cottonColors: 5 optionsWhat reviewers say: I wore these briefs under a fitted dress for a wedding, and I felt so confident. They smooth out everything so nicely. And the best part? They’re incredibly comfortable. No pinching or squeezing, just smooth, supportive comfort. —Mia Nunez, Glamour reviewerSave when you shop for the best seamless underwear with these Amazon promo codes.