What Is Sizing Like at THE PARK? A Stylist's Honest Fit Guide

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

THE PARK runs true to your usual alpha size (it works in XS to L rather than numbers), and because almost everything is cut from a stretchy sculpting knit, the fit is forgiving and far more flattering than most "basics" brands manage. The one caveat I'd flag straight away: this is a label designed for the long and lean — the house model is 5'9" and wears a small in nearly everything — so petite figures should expect generous lengths, and your sizing decision shifts depending on whether you're buying a structured top, a cropped trouser or a fluid dress.

Does THE PARK run big or small?

Neither, really — it runs true, which is exactly what founder Sarah Bonello set out to do. She built THE PARK around the idea that getting dressed shouldn't be a daily negotiation, and the sizing reflects that. Pick your normal alpha size and you'll usually be right. What trips people up is the size guide itself: THE PARK lists your body measurements (in inches), not the garment measurements, so don't panic when the numbers look smaller than a flat-lay tape measure would suggest. Measure your own bust, waist and hips, match them to the chart, and trust it.

The fabric is doing the heavy lifting

Here's the bit that genuinely sets the brand apart. Most of the range is made from PYRATEX® — a compact, four-way-stretch knit blended with recycled elastane that's also biodegradable and certified to the Global Recycled Standard. In plain terms: it moves with you, it skims rather than clings, and it smooths the midsection without a single seam digging in. I've travel-tested a sculpting knit capsule like this on a client shoot in Lisbon, and the same three pieces survived a 6am flight, a full day on set and dinner without so much as a crease. That recovery in the fabric is why the sizing feels so reliable — a little stretch covers a multitude of in-between measurements.

Where the fit gets garment-specific

This is the part worth slowing down for, because THE PARK's own fit notes change from piece to piece. As a rule of thumb:

Tops & tailored knits (think their mock-neck and zip styles) are cut to sculpt close to the body. The stretch means they're flattering rather than restrictive — stay with your usual size and enjoy the architectural lines.
Cropped trousers like the Tessa run with a neat, comfortable leg, and the brand specifically advises sizing down if you fall between two sizes. They're meant to sit clean, not loose.
Maxi & fluid dresses are the exception — here THE PARK tells you to size up if you're between sizes, so the drape falls properly rather than pulling across the hip.
Lengths run long. With models at 5'9", inseams and hems are generous. Lovely if you're tall; something to budget for tailoring if you're petite.

My own cautionary tale: I once ordered a stretch maxi in my standard size assuming the elastane would sort the length out. It did not. I spent the evening holding a fistful of hem on the stairs. Learn from me — check the inseam, and factor in a quick hem if you're under 5'6".

So who is THE PARK actually for?

If you live in elevated, do-everything basics — the kind of pieces that travel well, layer cleanly and never wrinkle — this brand is a quiet dream. The price point sits firmly in the premium-to-luxury bracket, so I'd treat it as an investment in core wardrobe building blocks rather than trend pieces. Tall and lean figures will find it close to perfect off the peg. Petite shoppers can absolutely wear it, but go in knowing the lengths and keeping your tailor on speed dial.

If you love THE PARK, you'll want these too

Part of my job is knowing which brand does which job best, so here's where I'd send you for the same sculpting-basics energy at different price points.

On the high street:

COS — the closest high-street match for THE PARK's architectural, clean-lined minimalism; brilliant for fluid trousers and sculptural knits.
Massimo Dutti — elevated tailoring and beautifully weighted jersey that punches well above its price.
Uniqlo — unbeatable for stretch base layers and AIRism/HEATTECH pieces to wear underneath your investment knits.
Whistles — modern, pared-back wardrobe staples with a grown-up edge.
Mango — for of-the-moment minimalist shapes when you want the look without the long-term spend.
Jigsaw — quietly excellent quality and considered cuts; a stylist favourite for timeless separates.
Hush — soft, easy everyday basics that nail the off-duty version of this aesthetic.

Premium picks:

Me&Em — clever, body-aware design and genuinely flattering proportions across a wide size range.
Baukjen — sustainable, considered staples built to last, very much in THE PARK's spirit.
Reiss — sharper, more occasion-leaning, but superb for structured pieces that hold their shape.

Luxury & designer:

Theory — the gold standard for stretch tailoring; if you adore THE PARK's sculpting fabrics, this is your next step up.
Totême — Scandinavian minimalism at its most refined, for elevated essentials you'll keep for a decade.

And because the best finds are rarely the obvious ones, two left-field independents worth a look: Maria McManus, a New York label making genuinely beautiful sustainable luxury basics, and Ninety Percent, a London-based brand sharing profits with its makers and producing some of the loveliest organic stretch pieces around.

The easiest way to nail your size first time

Here's where I'll let you in on the tool I wish I'd had at the start of my career. Tellar.co.uk is the UK's leading sizing tool — you measure yourself once (bust, waist, hip, or just enter a brand size you already own well) and it matches your body to over 1,500 brands instantly. No more squinting at a size guide and crossing your fingers.

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

There's also the Tellar Fashion Hub, our growing library of free posts from working stylists — honest, unbiased, independent and always free. Style advice, top picks and the best brands for every fit question you've ever had.

Find your perfect size in seconds with Tellar

Your body, matched exactly to 1,500+ brands instantly. Never look at a size guide again.

Measure once — using bust, waist, hip, or a brand size you already wear.
Get your precise size in any brand with the Store Size Lookup tool.
Always free, no downloads, works in your browser.

Start now at tellar.co.uk — honest, unbiased and always free.