Finding Your Clothes Size: The Ultimate Guide

In a world where a size 12 in one brand can be a size 8 in another, shopping for clothes shouldn’t feel like guesswork. Whether you love browsing the high street or shopping online, one question remains a source of frustration for nearly every shopper: “What’s my real size?” From size charts to body shapes, fit types and international conversions—it’s a minefield.

That’s exactly where Tellar.co.uk steps in.

We’re here to demystify clothing sizing for good. This comprehensive guide will walk you through how to understand size charts, why sizing varies, how other tools compare, and how Tellar.co.uk gives you the most accurate size match in seconds.

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Why Is Finding Your Size So Difficult?

You’re not imagining it: clothing sizes are a mess.

• A Zara Medium may fit more like a UK size 8.

• Meanwhile, a White Stuff 12 might feel more like a 14.

• Some US brands label a UK 10 as a size 6.

• Then there’s vanity sizing—brands shifting sizes to make you feel “smaller”.

There’s no industry-wide standard. Brands create their own sizing charts based on their customer demographics, fit models, and design intentions. Add in international conversions, different fabric types (e.g. stretch vs. rigid cotton), and seasonal fits—and it’s easy to see how confusing it can get.

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How Do Size Charts Work?

A size chart is a brand’s own definition of what “Small”, “Medium”, or “Size 12” actually means. Typically, charts include:

• Bust / Chest

• Waist

• Hips

• Sometimes: height, inseam, sleeve, or shoulder width

Reading a Size Chart

Take these steps:

1. Find your measurements (we’ll show you how below).

2. Look at the brand’s size chart—ideally on their product or help pages.

3. Match your largest measurement first—this determines the most comfortable fit.

4. Always round up if between sizes, especially if the fabric has no stretch.

🡒 Want to skip the guesswork? Use Tellar.co.uk to instantly match your measurements to 1,500+ brands.

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Other Sizing Tools and Their Limitations

Several sizing comparison tools exist, but many come with serious drawbacks:

Tellar.co.uk does things differently. Our approach is data-driven and user-first.

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What Makes Tellar.co.uk Different?

✅ 1. Real Measurements Over Labels

Tellar takes your exact body measurements (chest, waist, hips) and matches them to over 1,500+ brand size charts—including Zara, Mango, Massimo Dutti, COS, White Stuff, H&M, and more.

✅ 2. Instantly Finds Your Size in Any Brand

Just one quick entry—and you'll know your exact size across high street, designer, and online-only labels.

✅ 3. It’s Free & Easy

No credit card, no commitment. Just one-time login and you're done. You can even save your profile for future shopping.

✅ 4. Built-in Conversion Logic

Our tool automatically adjusts for sizing quirks across different regions and brands.

✅ 5. Universal Use

Use it on Tellar.co.uk, or via our Chrome extension when browsing supported stores online.

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How to Measure Yourself Properly

Before you can use Tellar or any size chart, you need accurate measurements. Here's how:

1. Chest / Bust

Measure the fullest part around your chest or bust, keeping the tape level under the arms.

2. Waist

Find your natural waistline—usually the narrowest part of your torso—and measure around it.

3. Hips

Stand with feet together and measure around the widest part of your hips.

Use a soft tape measure—or download our free printable measuring tape from Tellar.co.uk.

Want a visual guide? Visit our How to Measure page for images and tips.

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Printable Measuring Tape – For Free

If you don’t have a tape measure, we’ve got you covered. Download our printable one here—it’s 100% free and designed for accuracy. Just print, cut, and measure.

You only need to do it once, and you can log in anytime to update or view your size profile.

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One-Time Login. Lifetime Convenience.

We know data privacy and convenience are key.

That’s why Tellar.co.uk uses a one-time email login system. No password hassle. No spam. Just:

• Enter your email

• Add your measurements (or choose from known sizes like “I wear Medium in Zara”)

• Get your results instantly

And yes—you can save and return any time.

Create your free profile here: https://www.tellar.co.uk/create-profile/

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Fit Tips: Should I Size Up or Down?

• If in doubt, size up for items like jackets or woven trousers.

• Size down if the fabric includes stretch or elastane.

• For loose-fit items (e.g. oversized shirts), go with your usual measurement.

• Check the model info if available—many product pages list what size the model is wearing.

But honestly? Skip the stress and let Tellar.co.uk tell you.

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International Sizing Confusion

One of the biggest issues online is conversion:

This is just a basic guide—brands still define fit differently. Instead of memorising these charts, Tellar does all the legwork.

Our algorithm accounts for these conversions and brand deviations so you don’t have to.

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Why Sizing Accuracy Matters

• Reduces Returns: Over 30% of online fashion returns are due to poor fit.

• Saves Money & Time: Fewer failed purchases, less time browsing.

• Builds Confidence: When you know what fits, shopping feels empowering.

• Sustainable Fashion: Less returning = lower carbon impact.

With Tellar.co.uk, your best-fitting size is just seconds away.

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Stay Connected with Tellar

Stay in the loop for brand updates, sizing insights, and new features:

• Instagram: @Tellarsizing

• Facebook: TellarSizing

• Pinterest: TellarUK

• Twitter (X): @Tellar100

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Ready to Never Guess Your Size Again?

Join thousands already using Tellar.co.uk to take the guesswork out of shopping.

• It’s Free & Easy

• No more size chart decoding

• One login, thousands of brands

🡒 Create your profile now

🡒 Find your size in any brand

🡒 Get your printable measuring tape

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Tellar.co.uk – Find your size in 1,500+ brands real-time. It’s Free & Easy.