Tellar

The Technical Guide to Getting Denim Right — Without Guessing Sizes

Jeans are one of the most worn, most versatile, and most frustrating garments to shop for. Between inconsistent sizing, shifting waist-to-hip ratios, and unhelpful labels like “mom”, “straight” or “slim”, finding your perfect pair can feel like an endless guessing game.

But it doesn’t have to be.

In this post, we’ll break down the science of denim fit, why traditional size charts don’t help, and how Tellar.co.uk solves the jeans sizing problem permanently—using your real measurements to get the right fit across 1,500+ fashion brands.

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Why Jeans Are So Hard to Get Right

Unlike tops or dresses, jeans are precision garments. A few centimetres too tight or loose can ruin the fit entirely.

There are 3 main reasons jeans are difficult to buy:

1. They fit three major zones at once:

   • Waist

   • Hips

   • Thighs

2. Each brand defines sizes differently
   A “Size 10” at Zara can be 2 inches smaller at COS or Reiss.

3. Fit labels are misleading
   “Boyfriend”, “Slim”, “Straight” and “Relaxed” are cut descriptors—not sizing standards.

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The Technical Anatomy of Jeans Fit

To find your perfect jeans fit, you need to understand how they’re built. Most jeans are constructed around:

A “perfect fit” means all five of these are in sync with your body. Traditional size charts rarely account for more than two.

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The Problem with Standard Size Charts

Let’s take an example:

All claim to be UK Size 10. All fit completely differently.

Charts like this force you to:

• Manually compare every brand

• Convert between inches and centimetres

• Guess how stretch or rise will affect fit

That’s not realistic or scalable.

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The Real Solution: Tellar.co.uk

If you want to find your perfect jeans fit every time, you need a tool that:

✅ Uses your actual measurements
✅ Understands how each brand cuts their jeans
✅ Flags whether jeans run small, large or true
✅ Adjusts for rise, stretch, and brand fit bias
✅ Works for all styles: skinny, wide leg, mom, bootcut, flared

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

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How Tellar Works for Denim Sizing

1. You measure your waist, hips and optionally thigh
   Tellar guides you step-by-step, in cm or inches
   Start here

2. Create your free Tellar profile
   Sign up in seconds

3. Visit the store lookup page
   Type in your preferred brand (e.g. Zara, Reiss, Levi’s)

4. Tellar instantly tells you:

   • Your best-fitting size in that brand’s jeans

   • If the jeans run tight, true, or large

   • What styles match your proportions best

   • What size to choose in other brands for comparison

No guesswork. No returns. Just jeans that fit you perfectly.

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Why It’s Better Than Other Fit Tools

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Real Example: Your Fit Across Brands

Let’s say your measurements are:

• Waist: 74 cm

• Hips: 98 cm

Without Tellar:
You try on 2–3 sizes in every store. Returns happen constantly.

With Tellar:

• Zara: Size M jeans, high-rise, runs small

• Whistles: Size 10, true to size

• Reiss: Size 12 recommended, narrow hip cut

• Levi’s: Size 28W, stretch fit

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Bonus: Discover New Jeans That Fit You

Once your profile is created, Tellar can help you explore brands that actually fit your body. Whether you’re curvy, tall, petite or in-between, the algorithm filters styles that work best for your measurements—not just what’s trending.

You can finally stop buying jeans that:

• Flatten your bum

• Gap at the waist

• Cut in at the hips

• Ride up or sag down

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Why Tellar is the Future of Fit

The average woman owns 7 pairs of jeans, but wears only 2 or 3 regularly. That’s because most are bought through trial and error.

Tellar takes the error out of the equation by giving you:

• A consistent sizing system

• Tailored recommendations

• Confidence before you buy

• A profile you can reuse, update, and trust

🟢 Try Tellar for free now

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Stay Connected for Fit Tips and Denim Guides

• Instagram: @Tellarsizing

• Twitter/X: @Tellar100

• Facebook: TellarSizing

• Pinterest: TellarUK

We regularly break down the best jeans by body type, how brands compare, and which new styles are worth trying.

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Final Thoughts

You shouldn’t have to compromise on comfort, fit or confidence when buying jeans. You shouldn’t have to memorise 10 size charts, convert between countries, or buy “just in case”.

Tellar.co.uk is the fastest, most accurate, and easiest way to find your perfect jeans fit every time—across every brand.

Start by measuring once. Then get the right fit, forever.

🟢 Create your free profile here
🟢 Try your favourite brand now