Eterne Size Guide 2026: How the Tees, Cashmere and Rigid Jeans Really Fit
She is five foot ten, and she has given up on jeans that end above her ankle bone. Then she spots a straight-leg pair with a 34-inch inseam, a bootcut with 35, and an "Extra Long" with 37, and for once the problem is choosing, not settling. The next problem: the jeans are rigid denim with no stretch, the sweaters come in sizes like "M/L," and the tee is labeled oversized.
Eterne (styled ÉTERNE) publishes a size chart, fit notes and the model's height and size on nearly every product page, but the charts change from piece to piece. Olivia Reviews read them across the brand's tees, tanks, knitwear, lounge pants and denim in October 2026, so you can pick a size before you pay for a return label.
Quick take: Eterne uses two body-measurement charts for tops and lounge pieces, labeled FITTED and OVERSIZED, in either single sizes (XS–XL) or paired knit sizes (XS/S, M/L, L/XL). Its denim is sized 24 to 32 with full garment measurements, and the rigid Japanese and Italian denim has no stretch. Almost every listing we read says "fits true to size." Because return shipping comes out of refunds, it pays to get it right; you can also see today's Eterne deals before ordering.
First, find the chart label
Every Eterne size guide we opened is headed with a fit label, and that label tells you which numbers apply. Here are the two single-size charts, both in inches of body measurement:
| Size | FITTED bust / waist / low hip | OVERSIZED bust / waist / low hip |
|---|---|---|
| XS | 31–33 / 22.5–24.5 / 33–35 | 30–34 / 25.5–29 / 36–39 |
| S | 33–35 / 24.5–26.5 / 35–37 | 32–36 / 28.5–31 / 38–41 |
| M | 35–37 / 26.5–28.5 / 37–39 | 34–38 / 30.5–33 / 40–43 |
| L | 37–40 / 28.5–30.5 / 39–40 | 36–41 / 32.5–35 / 42–45 |
| XL | 40–42 / 30.5–32.5 / 40–43 | 39–43 / 34.5–37 / 44–47 |
Notice how the OVERSIZED chart accepts wider waist and hip ranges for the same letter. A shopper with a 28-inch waist is an M on the FITTED chart but an XS on the OVERSIZED one, which is why a boxy tee and a slim tank from the same brand can call for different letters.
Tees and tanks
Short Sleeve Boxy Tee ($115). Sized on the OVERSIZED chart, with a boxy fit and slightly cropped length. The listing says it fits true to size, and the model, 5'10", wears a size S. It's 50% cotton and 50% modal, made in the USA, and can be tumble dried on low.
90s Tank ($105). Sized on the FITTED chart: a slim, square-neck tank with thin straps, self-lined for what the brand calls a supportive feel. It's 96% modal and 4% spandex, fits true to size, and the 5'10" model wears an S. Care is a delicate cold cycle and dry flat, so skip the dryer if you want it to keep its length.
Baseball Tee ($135). Also on the FITTED chart, slim with raglan sleeves and a length the listing says hits at the natural waist. The model is 5'11.5" and wears an S.
Knitwear and paired sizes
Most Eterne cashmere uses three paired sizes, and the same FITTED/OVERSIZED split applies:
| Size | FITTED knit (e.g., Francis) bust / waist / low hip | OVERSIZED knit (e.g., Marcel) bust / waist / low hip |
|---|---|---|
| XS/S | 31–35 / 22.5–26.5 / 33–37 | 30–36 / 25.5–31 / 36–41 |
| M/L | 35–40 / 26.5–30.5 / 37–40 | 34–41 / 30.5–35 / 40–45 |
| L/XL | 37–42 / 28.5–32.5 / 39–43 | 36–43 / 32.5–37 / 42–47 |
The Francis Sweater is a slim, slightly cropped crewneck: $375 in 100% cashmere or $265 in a 95% cotton, 5% cashmere blend. A 5'11.5" model wears the cashmere version in XS/S. The Marcel Sweater ($525) is a relaxed cashmere V-neck, and the 5'10" model also wears XS/S. Both listings say they fit true to size. The Walt Cardigan ($595) is described as relaxed and boxy, so expect volume by design.
Care matters for fit here, too: the 100% cashmere pieces are dry clean only, while the cotton-cashmere Francis can be machine washed cold on a gentle cycle and dried flat.
→ Check the latest Eterne coupon codes and deals
Denim: read the garment, not just the size
Eterne's jeans are sized 24 through 32, and each listing gives garment measurements for every size: waist, hip, rise, inseam and leg opening. Its denim guide describes the core line as Japanese denim made in Los Angeles, and every pair below is 100% cotton rigid denim, which means no stretch to rescue a tight fit. Here is how the styles compare at size 24:
| Jean (price) | Shape | Waist / hip (size 24) | Rise | Inseam | Leg opening |
|---|---|---|---|---|---|
| Chloé Jean ($425) | Mid-rise, slim, straight | 26" / 34" | 10.25" | 34" | 14" |
| Cash Jean ($425) | Mid-rise, slim, bootcut | 26" / 34" | 10.25" | 35" (Extra Long: 37") | 16.25" |
| Saint Jean ($495) | Relaxed boyfriend, button fly | 30" / 38" | 11.5" | 32" | 16.5" |
| Dallas Jean ($495) | Mid-rise, relaxed, straight; Italian denim | 28.5" / 37" | 10.5" | 34" | 14.25" |
On the Chloé and Cash charts, each size step adds about an inch to the waist and hip and a quarter inch to the rise. The 5'10" model wears a 26 in the Chloé, Cash and Saint, in both the 35- and 37-inch Cash inseams. When Olivia Reviews checked, the Extra Long Cash was sold out in sizes 30, 31 and 32.
The Saint Jean deserves a second look at the numbers. Its size 24 measures 30 inches at the waist, four more than a Chloé 24, because the boyfriend cut is built loose. Since the listing still says it fits true to size, take your usual number and expect slouch. One oddity: the Dallas listing says its 5'11.5" model wears a 25 "and 35.5-inch inseam," while the spec lists 34 inches. If length is critical, ask support@eterne.com before ordering.
Denim care is the same across the line: wash and dry inside out, machine wash cold with like colors, and hang dry or tumble dry low.
Lounge pants and sweatpants
The Lounge Pant ($175) uses the OVERSIZED chart, has a relaxed fit and what Eterne calls a signature long length, with a 33¼-inch inseam. The Boyfriend Pocket Sweatpant ($280) is relaxed, with an interior drawstring and elastic cuffs; its 5'10" model wears an S. The Wide Leg Lounge Pant ($285) in cotton cashmere uses paired sizing, and its model wears XS/S with a 31.5-inch inseam.
A sizing checklist before you order
- Find the chart label (FITTED or OVERSIZED) at the top of the size guide.
- Measure bust, true waist and low hip, then match all three to that chart.
- For denim, compare the garment waist and inseam with a pair you already own.
- Check the model's height and size in the Fit & Fabric notes.
- Don't hem or alter anything until you're sure: altered items can't be returned.
If it doesn't fit
Eterne accepts refunds or exchanges within 30 days of receipt for new, unused items with all original tags. Exchanges for like items ship back to you by standard ground at no extra cost, while refunds have return shipping deducted, so a size swap is the cheaper fix. Final Sale items can't be refunded, exchanged or credited, and international returns aren't accepted. Orders ship within one to two business days, with free domestic shipping over $150.
Saving on your first Eterne order
Olivia Reviews didn't find a public promo code on eterne.com in October 2026. The footer offers "Join the list + 10% off your first purchase," and the FAQ says discount codes apply to full-price merchandise only. Any new offer will be on our Eterne coupon page.
Eterne sizing FAQ
Does Eterne run small?
Nearly every listing Olivia Reviews read says "fits true to size." The bigger factor is whether the piece uses the FITTED or OVERSIZED chart.
What does XS/S mean on Eterne sweaters?
It's a paired knit size spanning two single sizes. The ranges are on each sweater's size guide, for example 31–35-inch bust for a FITTED XS/S.
Which Eterne jean is longest?
The Cash Jean Extra Long, with a 37-inch inseam. The regular Cash is 35 inches and the Chloé is 34.
Do Eterne jeans stretch?
The styles covered here are 100% cotton rigid denim, so expect a firm feel rather than stretch.
Final verdict
Eterne gives you a lot of sizing information to work with: two clearly labeled charts, paired knit sizes with real ranges, and full garment specs for every jean. Read the chart label, trust the true-to-size notes, use the model heights as a reality check, and favor exchanges over refunds if you miss. Then see today's Eterne deals before you check out.
→ Check the latest Eterne coupon codes and deals
Olivia Reviews researched Eterne using its official website, product listings, size guides and published policies in October 2026. We haven't personally tested these products. We may earn a commission when you buy through our links, at no extra cost to you.