John Lewis Size Guide: How to Find Your Perfect Fit and What’s Worth Buying

When it comes to classic British fashion and reliable wardrobe staples, John Lewis stands out as one of the UK’s most trusted department stores. But like many multi-brand retailers, finding your perfect size at John Lewis can be surprisingly confusing. Sizing may differ not just between categories (dresses vs. coats), but between the brands they stock—from Kin to Hobbs, Whistles to Phase Eight.

This guide will walk you through how sizing works at John Lewis, what’s worth buying, and—most importantly—how to find your perfect size in seconds using Tellar.co.uk.

Why John Lewis Sizing Isn’t Always Straightforward

John Lewis sells a curated selection of high street and premium brands, each with its own unique size chart. For example:

Hobbs tends to run true to UK sizing, with tailored fits
Kin by John Lewis is generally more oversized and relaxed
Whistles can run slightly small, especially around the bust and waist
Phase Eight tends to run large—many customers size down

That means you might be a UK 12 in one brand and a UK 14 in another—even though you’re shopping on the same website.

Real Customers, Real Confusion

Feedback from thousands of Tellar.co.uk users highlights the same issues:

“I ordered three sizes of the same dress—only one fit.”
“Their in-house brands are a size larger than the labels they carry.”
“My top fits perfectly, but the trousers were huge!”

Sound familiar?

How to Instantly Find Your Correct Size at John Lewis

Instead of guessing, use Tellar.co.uk to match your body measurements to John Lewis brands in real-time. Our system compares your measurements (or known sizes from other stores) to sizing data across 1,500+ fashion brands, including every brand John Lewis stocks.

Here’s how to get started:

Create your free profile
Add your chest, waist, and hips measurements—or select a brand you already know your size in.
Get your free measuring tape
Don’t know your exact measurements? We’ll send you a tape for free (UK addresses only).
Log in to see instant recommendations tailored to your size profile.

You’ll get a personalised recommendation like:

“You’re a UK 12 in Kin, but a UK 14 in Whistles. Size down for Phase Eight.”

What to Buy at John Lewis (Based on Quality & Fit)

With so many brands to choose from, we’ve filtered the best of John Lewis for fit, quality, and repeat buyer satisfaction—according to customer reviews and Tellar.co.uk user data.

1. John Lewis ANYDAY Collection

Affordable, minimalist staples that run true to size. The relaxed cuts make these perfect for casual wear and loungewear.

Best buys: T-shirts, relaxed knitwear, cotton trousers

Tellar tip: Fits slightly oversized. Stick to your regular size or size down for a neater fit.

2. Kin by John Lewis

Scandi-inspired, boxy silhouettes. Kin runs larger than standard UK sizes, especially in outerwear and dresses.

Best buys: Oversized coats, cotton shirts, wide-leg trousers

Tellar tip: Size down if you prefer a more fitted silhouette.

3. Hobbs and Whistles

Classic tailoring and timeless silhouettes. These premium labels have a more structured fit and often use non-stretch fabrics.

Best buys: Blazers, pencil dresses, belted coats

Tellar tip: Check Tellar’s brand-specific recommendations—Whistles can run small, while Hobbs is usually true to size.

4. Phase Eight

Famous for wedding guest dresses and occasionwear, this brand generally offers more generous cuts.

Best buys: Cocktail dresses, jumpsuits, formal tops

Tellar tip: Many women size down by one size for a better fit.

Save Time, Skip Returns: Try Tellar.co.uk

Tellar.co.uk eliminates guesswork by showing you your best size across every brand John Lewis stocks. We analyse size charts, user feedback, garment cuts, and fit notes so you don’t have to.

Here’s what our users say:

“Tellar saved me £20 in returns last month alone.”
“I found out I was a different size in every brand. This tool just works.”
“I wish I’d known about Tellar.co.uk sooner!”

Related Brand Sizing Guides

Explore all 1,500+ brands we cover in our Brand Library.

CTA: How to Get Started With Tellar.co.uk

Whether you’re shopping at John Lewis or any other major brand, Tellar.co.uk is the UK’s leading free sizing tool. We offer instant size suggestions, honest fit feedback, and data-backed recommendations for over 1,500 retailers.

Step-by-step:

Sign up free here
Add your measurements or select a known size from any store
Choose your preferred units (cm or inches)
Get instant sizing across John Lewis and beyond

🧵 It’s free & easy. No guesswork. No unnecessary returns.

About Tellar.co.uk

We’re an independent sizing platform that gives real advice—no affiliate bias, no upselling, no nonsense. Our data is powered by real body measurements, garment specifications, and direct feedback from thousands of users. We’re here to make fashion simpler, smarter, and more inclusive.

Follow Tellar.co.uk for Updates & Sizing Tips

Stay connected for exclusive fit tips, new brand additions, and size guidance across the fashion industry.

Final Thoughts: Why It Matters

Shopping at John Lewis is meant to be easy—but finding the right fit shouldn’t involve guesswork or multiple returns. With Tellar.co.uk, you can shop smarter, faster, and with total confidence.

✅ Know your size in seconds

✅ Cut down on returns

✅ Discover which John Lewis brands suit your body shape

Try it free today and get the fit right the first time.