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How Do I Find My Right Size in Every Clothes Shop?

Author: Stylist and brand team at Tellar

Date: 2025

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Find my size

The Ultimate Guide to Sizing Across Brands, Stores, and Styles

Online shopping has made it easier than ever to browse clothing from hundreds of brands—but it’s also made sizing harder than ever. The biggest frustration for most shoppers? You’re one size in Zara, another in Reiss, and a completely different one in H&M.

If you’re tired of guessing, returning, or buying two sizes just in case, this post will show you exactly how to find your right size in every clothes shop—with one simple, accurate solution: Tellar.co.uk.

The Problem with Sizing Today

There is no universal size standard in fashion. Each brand creates its own size chart, based on its design principles, fit models, and target customer base.

What that means in practice:

Brand

UK Size 10 Equivalent (Bust)

Zara

86–88 cm

Whistles

88–91 cm

Reiss

84–87 cm

Mango

90–92 cm

So even though all of these are technically "UK 10", they can vary by up to 6 cm across the bust. Similar inconsistencies exist across waist and hip measurements too.

And that’s before considering:

  • Vanity sizing (brands labelling larger clothes with smaller numbers)

  • Alpha sizing (S/M/L with no real measurement basis)

  • Regional differences (UK vs EU vs US)

Why You Can’t Rely on Just One Size

Most people don’t fit neatly into a single size category. You might have a size 8 waist and a size 12 hip. Or a broader bust with narrower hips. Generic size charts ignore these distinctions.

So when you shop by “your usual size”, you’re actually playing a guessing game—and that’s why so many people return items that don’t fit.

The Traditional Solutions (And Why They Fall Short)

1. Manual Chart Comparison

Looking up each brand’s sizing chart, converting units, and trying to figure out your fit item by item.

✅ Pro: Direct from the brand

❌ Con: Time-consuming, inconsistent, not scalable

2. Fit Prediction Tools (Height + Weight)

Many stores use AI-based fit guessers that ask for your height, weight, and age.

✅ Pro: Fast

❌ Con: Doesn’t use actual measurements—very inaccurate for anyone not “average”

3. Order Two Sizes

The most common real-world solution: buy two, return one.

✅ Pro: Minimises risk

❌ Con: Wasteful, inconvenient, bad for sustainability

The Smarter Solution: Tellar.co.uk

If you want to know your right size in every brand, you need a tool that:

✔️ Uses your body measurements

✔️ Matches those to every brand’s actual size chart

✔️ Accounts for brand fit (e.g. runs small/large)

✔️ Covers 1,500+ shops and labels

✔️ Works instantly, for free

That’s exactly what Tellar.co.uk does.

How Tellar.co.uk Works (Step by Step)

  1. You measure your chest, waist, and hips

    • Tellar accepts cm or inches

    • You can find a measuring guide here

  2. Create a free Tellar profile

  3. Visit the Store Size Lookup Tool

    • Type the name of any shop

    • Tellar instantly shows you:

      • Your best-fitting size

      • If the brand runs small, true, or large

      • Whether it offers petite, tall or curve options

      • Size equivalents in other retailers

Example: One Person, Four Shops, Four Sizes

Say your measurements are:

  • Chest: 90 cm

  • Waist: 72 cm

  • Hips: 96 cm

Without Tellar:

  • You’re not sure if you’re an 8, 10, or M

  • You check size charts manually—or guess

  • You order two sizes “just in case”

With Tellar:

  • Zara: Size M (runs small)

  • Reiss: Size 10

  • Whistles: Size 8

  • H&M: Size 10, but with looser fit

In seconds, you know exactly what to order.

Why Tellar Works When Others Don’t

Feature

Other Tools

Tellar.co.uk

Uses body measurements

❌ Sometimes

✅ Always

Works across 1,500+ brands

❌ No

✅ Yes

Runs true-to-size detection

❌ No

✅ Yes

Stores your profile securely

❌ No

✅ Yes

Supports both CM and Inches

❌ Not always

✅ Yes

Free to use

❌ Often paid

✅ 100% Free

Works on mobile + desktop

✅ Usually

✅ Yes

Results: Better Fit, Fewer Returns, Less Frustration

Fashion return rates in the UK are among the highest in the world. Over 30% of online clothes are returned—most due to poor sizing.

When you use Tellar:

  • Returns drop (by 25–35%)

  • Shopping confidence rises

  • You save time and money

  • The planet wins (fewer deliveries and waste)

Frequently Asked Questions

What if I don’t know my measurements?

Use a flexible tape measure at home or download Tellar’s printable measuring guide.

Can I use it for men’s clothing too?

Yes. Tellar works for both men and women across shirts, trousers, jeans, dresses and more.

Is it really free?

Yes. There are no hidden costs, no subscriptions, no app download needed.

Ready to Find Your True Size in Every Shop?

🟢 Create your free profile here

🟢 Search for your favourite brands

🟢 Discover how it works

Stay Connected with Tellar.co.uk

For brand updates, fit tips, and sizing insight:

Final Thoughts

You shouldn’t need guesswork, spreadsheets, or double orders to shop online. The fashion industry made sizing complex—Tellar.co.uk is making it simple.

If you want to know your size in every clothes shop—across over 1,500+ brands in real time—Tellar is the only tool you need.

No guessing. No returns. Just the right fit.

Find my size