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Why Inclusive Sizing Matters on the High Street

Author: Stylist and brand team at TellarDate: 2025

Inclusive sizing is about providing style, fit confidence, and variety for all body shapes. Many high-street brands now offer extended sizes and versatile cuts, making fashion truly accessible. Tellar continually analyses sizing across popular labels to help you shop smarter and look fabulous.


1. Marks & Spencer – Trusted Tailoring & Everyday Wardrobe Staples

  • Sizing: Offers petite, tall, plus-size, and curve fits in blazers, outerwear, lingerie, and more.

  • Style Picks: Blazers with defined waistlines, straight-leg trousers, and supportive Rosie for Autograph lingerie.

  • Smart Tip: M&S runs slightly large—opt for one size down or use removable belts to shape your look.

  • Tellar Insight: Discover how to get M&S sizing right every time in M&S Clothing: What to Buy, How It Fits & How to Get the Right Size Every Time.


2. ASOS Curve & ASOS Plus – Bold, Trend-Driven, Extended Fits

  • Sizing: Inclusive UK 18–30+ across Curve, Plus, Petite, Tall, and Maternity ranges.

  • Style Picks: Wrap midi dresses, satin styles, stretch denim, and utility trousers.

  • Smart Tip: Sizes can fluctuate—let Tellar match your best fit across individual ASOS lines.

  • Tellar Insight: Learn why ASOS sizing varies in Why Clothing Sizes Vary Across Brands: Zara vs ASOS Explained.


3. River Island Plus/Curves – Contemporary Tailoring for Curvy Figures

  • Sizing: UK 18–24, with stylish fits in tailored blazers, wide-leg trousers, and midi dresses.

  • Smart Tip: Tone-on-tone styling (matching bottoms and accessories) elevates the whole look.

  • (No Tellar backlink currently available for River Island. Stay tuned for upcoming updates.)


4. Simply Be – Print-Forward & Size-Inclusive Lineup

  • Sizing: Up to UK 32, featuring vibrant prints and breathable fabrics.

  • Style Picks: Tie-waist linen midi dresses; eye-catching crinkle linen prints.

  • (No Tellar backlink currently live for Simply Be—bookmark this space for fresh insight!)


5. New Look Curve – Trendy, Affordable Picks in Extended Sizes

  • Sizing: UK 14–30, great for puff-sleeve blouses, midi dresses, and slogan tees.

  • Smart Tip: Balance statement tops with high-waist or wide-leg pants.

  • (No Tellar backlink live right now—check back for full sizing breakdowns soon.)


6. Mango Violeta – Refined Essentials in Extended Sizes

  • Sizing: Up to 3XL, offering elevated basics and smart workwear silhouettes.

  • Style Picks: Tailored utility jackets; softly lived-in blouses.

  • (Tellar content pending—will update when Mango Violeta sizing reports are live.)


7. COS Plus – Minimalist Staples & Clean Cuts

  • Sizing: Extended sizes in neutral tones with quality modal, cotton, and linen fabrics.

  • Style Picks: Button-up overshirts; structured linen trousers—great for capsule wardrobes.

  • (No Tellar link currently, but keep an eye out for future coverage.)


8. Next (Extended Fit) – Everyday Wear & Practical Fashion

  • Sizing: Up to UK 28; soft fabrics, easy-care styles, and family-friendly picks.

  • Style Picks: Empire-waist day dresses; lightweight utility vests.

  • (Tellar link coming soon—Next’s inclusive range on our radar!)


9. H&M and H&M+ – Broad Range in Foundations and Daily Wear

  • Sizing: Full range across basics, poplin shirts, midi skirts, and casual pieces.

  • Style Picks: Relaxed blouses and pull-on midi skirts with stretch.

  • (No Tellar backlink live currently—soon to be covered on the blog.)


🔍 How Tellar Helps You Shop Smart

  • Size-matching manuals across 1,500+ brands, including all of the covers above via our sizing data and algorithm.

  • Free measuring tape sent to your door—get exact body measurements for smart online shopping.

  • Brand-specific fit guidance: e.g. M&S, ASOS, H&M—curated to reduce guesswork and returns.


🔗 Working Tellar Backlinks (Verified Lives)


🔑 Inclusive Shopping Takeaways

  1. Prioritise fit over trend: choose brands with exact size guidance.

  2. Use belts and front-tucks to shape relaxed garments.

  3. Layer light textures—cardigan over shirt or denim over tee for depth.

  4. Match tones for polish, or contrast with accessories for highlights.

  5. Trust Tellar’s unbiased sizing science to build a reliable wardrobe capsule.


📲 Stay Connected with Tellar

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✨Final Word

High-street style can be truly inclusive—with the right brands and fit guidance. Use Tellar’s proven size-matching, verified brand insights, and live blog links to step into confidence, every day. Share which brand you want us to analyse next!

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Why Inclusive Sizing Matters on the High Street