What Is Sizing Like at Olivia von Halle?

Olivia von Halle fits true to size, so in nine cases out of ten you should order your usual UK size and feel confident doing it. The brand cuts to UK sizing, the classic silk pyjamas are designed to sit slightly loose rather than skim the body, and the silk itself has almost no give — so the one thing you can't do here is rely on stretch to bail you out. I've styled enough silk over the years to tell you that fine fabric is wonderfully unforgiving, and OvH is the very definition of fine fabric.

Here's everything you need to know before you spend, because at this price point a sizing mistake stings.

The short answer on fit

True to size. Take your normal UK size as your starting point.
UK sizing throughout. Current styles run XS to XL (roughly UK 8 to 16).
The old numbered system. If you're buying vintage or resale OvH, you'll see sizes 1 to 4 — that's simply 1=XS, 2=S, 3=M, 4=L. Don't let it throw you.
Sizing is height-aware. The brand's own guide asks for your dress size and your height, because the trousers are cut long and leggy.

Fit changes with the silhouette

This is where most people come unstuck. OvH isn't one fit — it's several, depending on what you're buying:

Classic silk pyjamas (Lila, Coco): cut to drape and sit a touch loose. Take your usual size; sizing down only makes the trousers cling where they shouldn't.
Bias-cut slips (Issa, Xena): these hug. Bias silk follows every line you have, so your exact bust and hip measurements matter far more than the label.
Robes and kimonos: often sold S/M or M/L, and the drape leans on shoulder width and height more than dress size.
Missy hoodie and track sets: a relaxed, modern streetwear fit. If you like a sleeker line, this is the one place I'd happily size down.

My own confession: the first silk slip I ever bought, I sized up "to be safe" and spent the evening hoisting it back onto my shoulders. Bias silk doesn't need breathing room — it needs your real measurements. Lesson learnt, expensively.

A quick styling word

The trick with OvH is to treat it as daywear, not just bedwear. A printed silk pyjama shirt tucked into tailored trousers, or a slip worn under a sharp blazer, earns its keep ten times over. Buy the size that lets the fabric move — silk this good wants to flow, and a slightly relaxed fit always reads more expensive than something pulled tight.

Where to shop for the look — by budget

High street

You won't find OvH's 19-momme silk on the high street, but these do silky, well-cut sleepwear and loungewear beautifully:

The White Company — the closest high-street feel to OvH, with elegant silk and brushed-cotton nightwear that's quietly luxurious.
M&S — their satin pyjama sets are perennially the best-reviewed on the high street, and the fit is reliably true.
Hush — a loungewear specialist; their slips and washed-silk pieces are a brilliant everyday alternative.
Boden — strong on quality printed cotton PJs if you love OvH's bold prints but not the price.
Whistles — does refined satin slip and camisole styles that work day or night.
Mint Velvet — loungewear-led with a grown-up, soft-luxe sensibility.
Jigsaw — understated silk-blend pieces with a genuinely good cut.

Premium

Sézane — the French label nails silky camisoles and loungewear with that effortless Parisian polish.
Toast — natural-fibre, understated luxe; perfect if you want OvH's calm without the print.
Ghost — the original slip-dress house, all slinky satin and bias cuts.

Luxury / designer

Eberjey — the cult name in luxe loungewear, buttery modal and silk that fits beautifully.
Derek Rose — the British luxury nightwear house, exquisite silk and impeccable tailoring.
La Perla — Italian heritage and silk lingerie at its most opulent.

Two independents worth knowing

Yolke — a London independent doing joyful, colour-led silk sleepwear that feels like a real OvH rival.
Desmond & Dempsey — the cult independent pyjama label, famed for hand-illustrated prints on dreamy cotton.

Get the size right before you spend

When the silk is this fine and the price this serious, guessing isn't a strategy. That's exactly what Tellar.co.uk is for — the UK's leading sizing tool, matching your body to 1,500+ brands instantly so you never squint at a size guide again. Measure once, using your bust, waist and hip (or just your size in a brand you already own), and Tellar does the rest.

Use the Store Size Lookup tool to get your precise size in any brand — COS, Reiss, Everlane, Arket and more.
Always free, no downloads — it works straight in your browser.

And once you've sorted your size, the Tellar Fashion Hub is a free library of honest, unbiased posts from our stylists — style advice, top picks and the best brands, with no adverts and no agenda.

Don't gamble on luxury silk.

Get your exact Olivia von Halle size in seconds — and your size in 1,500+ other brands while you're at it. Free, unbiased, no downloads.

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