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Brands That Typically Fit True to Size (UK & USA)

Author: Stylist and brand team at Tellar

Date: 2025

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Some fashion brands are known for running true to size across most product categories, making them easier to shop from without second-guessing. Below is a list of UK and international brands widely considered to be reliable for their sizing, based on consistent customer reviews, return rates, and fit analysis.

✅ Brands That Typically Fit True to Size (UK & USA)

🇬🇧 UK Brands

  1. M&S (Marks & Spencer)

  2. John Lewis

    • Their own-brand labels (ANYDAY, Modern Rarity) tend to run true to size.

    • Great for coats, dresses, and smart casual items.

  3. Whistles

    • Tailored pieces like blazers, trousers and dresses are consistent.

    • Designed with an urban professional demographic in mind, so sizes align well with UK high street norms.

  4. Phase Eight

    • Occasionwear and casual wear are both reliably true to size.

    • Particularly good for structured dresses and jumpsuits.

  5. Boden

    • UK brand with a slight American crossover. Known for structured sizing and good length options.

    • Reliable for outerwear, dresses, and kidswear.

  6. Reiss

    • Generally runs true, but fitted items (e.g., bodycon or tailoring) may feel snug.

    • Choose your regular size for a close fit or size up for comfort.

  7. Finisterre

    • Outdoor brand known for quality materials and practical fit consistency.

    • T-shirts, outerwear and knits are very dependable in sizing.

🇺🇸 USA Brands Available in the UK

  1. Everlane

    • Known for their commitment to standardised fit and ethical production.

    • Basics like tees, jeans, and knitwear tend to run true to size.

  2. J.Crew

    • Regular sizing runs true across most of their collection, especially in blouses, trousers, and denim.

  3. Madewell

    • Slightly generous cuts, but still consistent. Great for denim, T-shirts, and relaxed fits.

  4. Ralph Lauren

    • True to size in their core lines (Polo, Lauren), though tailored or designer capsule pieces may run slim.

  5. Banana Republic

    • Mid-range brand with a fairly predictable sizing model, especially in workwear and dresses.

🧥 Categories Most Likely to Run True to Size

  • Basic T-shirts and jersey tops

  • Tailored blazers and trousers (from reputable brands)

  • Cotton shirts with minimal stretch

  • Structured coats and jackets

  • Occasion dresses from UK high street brands

⚠️ Categories to Watch (May Vary Despite the Brand)

  • Denim: Even within the same brand, fits can differ by cut (e.g. straight vs skinny vs mom fit).

  • Swimwear: May run small in bust or hips depending on cut.

  • Shoes: Half sizing and width availability varies widely.

  • Loungewear: Some brands intentionally cut oversized.

📏 Skip the Guesswork with Tellar.co.uk

Instead of second-guessing if this brand runs small or that style fits big—use Tellar.co.uk to find your exact size in over 1,500+ brands, instantly.

🔍 What is Tellar?

The UK’s Leading Sizing Tool that:

  • Matches your body (bust, waist, hips) to every brand’s exact fit

  • Bypasses vague size charts

  • Works with M&S, COS, Arket, Reiss, H&M, Everlane, Massimo Dutti & more

✅ How to Use:

  1. Create your free profile – enter measurements or a known store size

  2. Use the Store Size Lookup Tool – get your perfect size across brands👉 Finding Your Clothes Size: The Ultimate Guide

  3. Download your free printable measuring tape

  4. Shop with confidence – fewer returns, better fits, no size stress

🧠 Plus: The Tellar Fashion Hub

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  • No affiliate bias

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Final Tip

Even with “true to size” brands, variations exist between cuts, fabrics, and collections. The best way to avoid costly returns and frustration is to use Tellar.co.uk to decode how each specific item will fit you. It’s accurate, fast, always free, and completely independent.

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Brands That Typically Fit True to Size (UK & USA)