The best underwear to wear under leggings

Short answer: the best underwear to wear under leggings is a seamless G-string in a skin tone. Leggings are thin and unforgiving, so only a pair with no back seam and no leg elastic truly disappears. Briefs and cheap thongs print a line every time. If you would rather not think about it, a seamless G is the one cut that solves it. Here is the honest guide, including whether to just go without.

Why does my underwear show under leggings?

Because leggings press thin fabric flat against every edge. The culprits are stitched leg elastic, a back seam, and a waistband that sits under the legging's own waistband and doubles up. Colour matters too, but edges are the real giveaway. A brief has the most edges, a thong has fewer, a seamless G-string has almost none.

The best cut for leggings

A seamless G-string with bonded flat edges. There is no back panel to outline and no leg elastic to print, so under leggings it genuinely disappears. Match it to your skin tone rather than the leggings, and there is nothing to see from any angle. This is the pair that ends the mirror-check.

Should you go commando under leggings?

It is an option, and some people prefer it. The honest trade-off: going without removes any line, but a thin breathable pair with a cotton-lined gusset adds a layer of hygiene and reduces friction against the legging seam, which many women prefer, especially for workouts. If you go without, fine. If you would rather have that thin protective layer without a visible line, a seamless G gives you both.

What to look for

• Bonded flat edges, no stitched leg elastic.
• No back seam.
• A cotton-lined gusset (matters more under sweaty workout leggings).
• Skin-tone, not matched to the leggings.
• A soft waistband that sits flat, not doubling up under the leggings.

Our pick: the Anywhere G

The pair we make, the Anywhere G, was built for exactly this: seamless, no back seam, bonded edges, cotton-lined gusset, breathable knit for when leggings get sweaty. It is from $21.90 a pair in packs. For the full breakdown, our no-VPL leggings guide goes deeper.