What Is Sizing Like at Jane & Tash? Everything You Need to Know Before You Buy

By Ella Blake — Fashion Stylist | Tellar Fashion Hub — Always honest, unbiased & unsponsored

Jane & Tash runs true to standard UK sizing overall, but their coats and structured jackets are intentionally cut with a slightly oversized, tailored silhouette — which means if you're between sizes or planning to layer underneath, sizing up one is absolutely the right call.

I'll be honest: the first time I came across Jane & Tash I was standing in front of my laptop at midnight genuinely debating whether to risk a £400 coat without trying it on. That dramatic faux fur collar, the sharp defined shoulders — it was exactly the kind of outerwear moment I live for. But I had no idea whether to go for my usual 10 or hedge my bets and go up to a 12. If you're in that exact position right now, I've got you — let's talk through the sizing properly.

Who Are Jane & Tash?

Jane & Tash is a British brand that's built its entire identity around the statement coat. Think structured outerwear with faux fur collars, defined waists, clean shoulder lines, and that slightly cinematic quality that makes you feel like you're walking into a magazine shoot rather than Waitrose. Their pieces sit at the premium end of the market — this isn't fast fashion, and the craftsmanship shows. But with that investment comes the very reasonable anxiety of getting the size wrong.

How Does Jane & Tash Sizing Actually Work?

The good news: Jane & Tash uses standard UK sizing, so a 10 is a 10, an 8 is an 8, and so on. There's no strange continental conversion to worry about. Here's a quick reference:

UK SizeEU SizeUS SizeBust (cm)Waist (cm)Hips (cm)634280618783648465911038688699512408927399144210967710316441210182108

The Key Fit Nuances — This Is Where It Gets Interesting

Standard sizing is one thing. But Jane & Tash has a very deliberate aesthetic — those sharp, structured silhouettes are part of the design language. Here's what you actually need to know garment by garment:

Statement coats (the hero pieces): Cut with slightly oversized, structured proportions. If you're wearing chunky knitwear underneath — and let's be honest, that's exactly what you're doing in a Jane & Tash coat — go up one size. If you're wearing it over just a fine-knit or blouse, your true size works beautifully.
Tailored jackets: These tend to run more fitted through the shoulder and chest. If you're fuller in the bust or have broader shoulders, I'd recommend checking the bust measurement before ordering rather than going purely on number. The shoulder seam placement is quite precise here — it's not a forgiving cut.
Shorter coats and shackets: Generally more relaxed in construction and tend to be the most straightforward sizing in the range. True to size for most people.
Petite frames: The brand doesn't offer a dedicated petite range, so if you're under 5'4", be aware the hem length on full-length coats can overwhelm. You're not going to get swamped exactly — the structure keeps it smart — but it's worth checking the length dimensions if you can.
Fuller busts: Prioritise your bust measurement over your dress size when choosing. Structured outerwear with set-in sleeves can pull across the chest if you're between sizes.

My Personal Jane & Tash Moment

That midnight coat debate? I went with my true size 10 and it arrived. Absolutely glorious. But I was in a fine roll-neck underneath and it fit like a dream. A month later I tried it over a thick chunky cable-knit and honestly couldn't get it done up comfortably. Lesson absolutely learned the hard way — if you're a cold-weather layerer, size up. That's not a criticism of the brand, it's just the reality of structured outerwear design. I now have both sizes (do not tell my accountant).

Jane & Tash vs. Similar Brands — How the Sizing Compares

If you're used to shopping at Whistles — consistently well-cut, true to UK size, great for tailored outerwear — Jane & Tash will feel familiar in terms of sizing logic. Reiss runs a touch more fitted through the body, so if you're a 10 in Reiss you may want to stay a 10 at Jane & Tash or go 12 if layering. Massimo Dutti also skews slightly on the smaller side, particularly in their coats. Use whatever you know works for you as a reference point — it really does help.

High Street Alternatives Worth Knowing

Love the Jane & Tash aesthetic but want options at different price points? Here are the brands I'd genuinely point a client towards:

Whistles — Excellent structured coats season after season. The tailoring is genuinely impressive at the price and sizing is reliably true to UK.
Me&Em — A consistent go-to for elevated outerwear with real attention to fit. Particularly good if you want that clean, considered look without going full luxury spend.
Hobbs — Classic British tailored coats done brilliantly. Great for defined waists and clean shoulders, sizes tend to run true.
Phase Eight — Brilliant for occasion-ready coats and smart winter dressing. Usually runs true to size with a slightly more generous cut through the body.
Ted Baker — Strong outerwear game, especially anything with interesting collar detail or embellishment. Be aware Ted runs slightly small — most people size up one.
Reiss — Polished and precise. Excellent quality at a premium high street price point and a great size-down sister brand to Jane & Tash in terms of aesthetic.
Cos — If you love the clean minimalist cuts in Jane & Tash's simpler styles, COS is the understated, brilliant-quality option. Very consistent sizing, true to UK throughout.
Jigsaw — Quietly brilliant for British outerwear. Well-made, beautifully cut, and runs true to size across the board.

Premium & Designer Alternatives

If you're considering Jane & Tash at the premium end, you're probably also looking at:

Weekend Max Mara — Italian luxury at a slightly more accessible price. Note these run large — a size down is almost always the right call.
Max Mara — The full luxury tier. Iconic coats, unbeatable quality. Sizing is consistent but the oversized silhouettes are intentional — don't be alarmed, size down with confidence.
Harris Wharf London — An independent British brand making some of the most beautifully constructed wool coats around. Sizing is precise and true, and the quality is genuinely outstanding.
Rino & Pelle — A brilliant independent label for statement outerwear with bold colours and interesting textures. True to UK sizing and worth knowing about if you love a coat that turns heads.

Never Guess Your Size in Jane & Tash Again

This is exactly the kind of sizing headache that Tellar.co.uk was built to solve. We match your measurements to over 1,500 brands — including Jane & Tash — so you know exactly what size to order before you hit checkout.

Here's how it works:

Measure once — bust, waist, and hips (we'll even post you a free tape measure)
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Already know your size in Reiss, Whistles, or Zara? Tellar can cross-match from that too
Always free. No downloads. Works instantly in your browser.

Tellar is completely independent — no sponsorship, no brand deals, no paywall. Just honest sizing, for every body.

Final Verdict on Jane & Tash Sizing

Standard UK sizing, well executed — but the structured, slightly oversized outerwear cuts mean you really do need to think about what's going underneath. Thin layers? True to size. Thick knits and chunky jumpers? Go up one. Shoulders and bust are the measurements to prioritise with this brand, and if you're on the fuller side in either, check measurements before you order. The investment is absolutely worth it — these are genuinely beautiful pieces — just go in with the right size and you won't regret a penny of it.