What Is Sizing Like at Les Girls Les Boys?
Author: Stylist at TellarDate: 2026
TELLAR FASHION HUB — SIZING GUIDE
By Ella Blake — Fashion Stylist | Tellar Fashion Hub — Always honest, unbiased & unsponsored
Les Girls Les Boys sizing runs true to size on most pieces — but the brand's deliberate mix of figure-hugging lingerie and generously oversized loungewear means the approach varies significantly depending on what you're buying. Get it right and this brand is genuinely brilliant. Get it wrong and you'll be swimming in a hoodie or stretched across a bralette. I've done both, so let me save you the guesswork.
"I ordered my usual size-10 in a ribbed bralette and it was perfect — then grabbed the same size in one of their logo joggers and looked like I'd borrowed them from someone two sizes larger. It's that kind of brand."
The Brand in Brief
Founded by Serena Rees MBE — the woman behind Agent Provocateur — Les Girls Les Boys is a London-born label that blurs the lines between lingerie, loungewear, and streetwear. The whole ethos is "bed to street": pieces that feel as good at 7am as they do on an afternoon coffee run. Think ribbed cotton bralettes, organic-cotton joggers, mesh briefs, and logo-heavy sweatshirts. It's cool, a little genderless, and genuinely wearable.
Sizes run from XS to XL across most categories, with underwear often extending to XXL. The brand doesn't use traditional UK numeric sizing — it's XS through XL — which adds an extra layer of confusion if you're used to shopping by number. That's exactly why using the Tellar Store Size Lookup tool is so useful here: plug in your measurements and it'll match you to the right Les Girls Les Boys size instantly.
How Sizing Breaks Down by Category
LINGERIE & BRALETTES
True to size — occasionally snug
The ribbed and jersey bralettes are generally true to size, with a natural, unstructured shape that suits smaller cup sizes especially well. There's no underwiring and minimal padding, so if you're a fuller bust you may find them a touch stretched at your usual size — consider sizing up. The mesh pieces run similarly, though they have a bit more give. If you're between sizes, I'd always go up on lingerie here: a slightly loose bralette looks intentional on this brand; a too-tight one doesn't.
BRIEFS & UNDERWEAR
True to size — 5-size range available
This is where sizing is most reliable. The brief range goes from XS to XL (and sometimes XXL), fits consistently, and the rib cotton jersey gives enough stretch to accommodate minor sizing uncertainty. The high-cut brief styles in particular run well — they deliver the coverage they promise without pulling or gaping. Customer reviews on these are consistently excellent, with most noting accurate sizing and a very comfortable fit straight away.
JOGGERS & SWEATPANTS
Intentionally oversized — size down if in doubt
This is the one that catches people out. The loungewear pieces — joggers, sweatpants, the wide-leg styles — are deliberately cut with a relaxed, oversized silhouette. If you're under 5'4" or on the petite side, size down. If you love the oversized drop-crotch look and are comfortable in it, stick to your usual size. I'm normally a medium and found the medium joggers genuinely enormous on me — a small fit far better and still gave that relaxed feel I was after.
HOODIES & SWEATSHIRTS
Relaxed fit — true to size for the oversized look
The hoodies and crew-necks are cut for a relaxed, boyfriend-style fit. Your usual size gives you an easy, slouchy feel that works brilliantly styled over leggings or with wide-leg trousers. If you want a more fitted look — say, tucked in with high-waist jeans — size down by one. Made primarily in organic cotton, the fabric is soft but doesn't shrink dramatically, so there's no need to buy up to account for washing.
SHORTS & CYCLING SHORTS
True to size — note the dual-fit system
Les Girls Les Boys actually offers two fits on some shorts: a "Les Girls regular fit" (take your normal size) and a "Les Boys fit" for a looser, more relaxed cut (size up). It's a smart system once you know it exists — but confusing if you don't. On tight and cycling-style shorts, the brand fits true to size with a reassuring amount of stretch. Don't size down hoping for extra compression; the fit is snug but not restrictive at your standard size.
My Top Sizing Tips
For lingerie and bralettes: start with your usual size, but go up if you're a C cup or above
For joggers and wide-leg styles: size down one — these run very generously
For hoodies and sweatshirts: true to size for the intended look; size down if you want a less oversized fit
For briefs and underwear: true to size across the board, very reliable
Petite shoppers (under 5'4"): size down on all loungewear — the proportions are cut for average to tall frames
When in doubt, use the Tellar Store Size Lookup — it'll give you your exact size in Les Girls Les Boys based on your measurements
Is Les Girls Les Boys Worth the Price?

The brand sits at a mid-to-premium price point — briefs from around £20, bralettes from £35, hoodies upwards of £90. For what you're getting — organic cottons, ethical manufacturing, and genuinely thoughtful design — I think the underwear and basics offer solid value. The loungewear is more of a treat purchase, but if you're someone who lives in quality sweats, the investment is absolutely justified. The quality holds up wash after wash, which can't always be said for brands at similar price points.
One honest note: the sizing and labelling system can feel inconsistent if you're shopping a wide range of pieces in one go. A medium bralette and a medium hoodie exist in completely different sizing universes on this brand. Take it piece by piece and you'll be fine — or let Tellar do the heavy lifting for you. You can check your exact fit across over 1,500 brands at tellar.co.uk, including Les Girls Les Boys, in seconds.
Brand Alternatives — Similar Styles at Every Budget
Love the vibe but want to mix it up, or find the price point a bit steep? Here's where I'd look across every tier.
HIGH STREET
Cos — The masters of clean, minimal loungewear. Their organic cotton basics have a similar understated quality to LGLB, and sizing is very consistent. A brilliant everyday alternative for the essentials.
Weekday — Arguably the closest in aesthetic: gender-fluid silhouettes, relaxed cuts, cool branding. Their jersey sets are excellent value and fit predictably.
Monki — Brilliant for the underwear alternatives: playful, comfortable, affordable. Their rib cotton sets are genuinely cute and wear well.
Urban Outfitters — Strong on the oversized hoodie and sweatshirt front. Their branded loungewear hits a similar casual-cool note at a friendlier price.
ASOS — Good for mix-and-match lingerie-style bralettes and basics. The ASOS Design range does a surprisingly good job at the ribbed separates.
All Saints — Better known for leather jackets, but their loungewear pieces have a similarly pared-back, slightly androgynous quality worth exploring.
Abercrombie & Fitch — Their YPB and cosy ranges have improved enormously; soft-touch joggers and hoodies with a similar relaxed energy to LGLB's streetwear pieces.
INDEPENDENT PICKS
Roam — A small London-based brand doing beautifully made, unisex loungewear in organic jersey. Thoughtful sizing, ethical production, and a genuinely cool aesthetic. Very much in the spirit of LGLB.
Baserange — Danish slow-fashion brand making exceptionally comfortable underwear and minimal separates. Their sizing is clear and sizing up is actively encouraged — perfect if you've found LGLB bralettes run a touch small.
PREMIUM
Skims — The go-to for body-con intimates and elevated basics. More structured than LGLB but with a similarly inclusive, accessible feel. Sizing guidance is excellent.
Hanro — Swiss brand with impeccable quality basics. If you love the LGLB rib cotton pieces but want something even more refined, Hanro is it.
LUXURY
Eres — The Parisian standard for luxury loungewear-meets-lingerie. Minimal, beautifully made, and with a similar effortless aesthetic to the LGLB ethos taken to its most elevated form. Sizing is European but their guides are excellent.
TELLAR.CO.UK — UK'S LEADING SIZING TOOL
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