Does the Brand Klass Run Big or Small? What Is Their Sizing Like—and What Should You Buy?

Klass is a UK-based womenswear brand known for timeless, easy-to-wear pieces that flatter mature and curvier figures. Whether you're shopping in-store or browsing Klass online or through retail partners like M&Co or Debenhams, the key question is: Does Klass clothing run big or small—and what size should you actually buy?

👉 At Tellar.co.uk, we’ve analysed every single brand’s sizing data, including Klass. With a one-time quick setup, we match your body measurements to your perfect fit in over 1,500 brands—including size-specific fabric stretch and fit notes. It’s always free to use, with no catches, and you can request a free measuring tape to get started. Never check a size chart again—we’ll do it for you.

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Klass Sizing at a Glance

Designed for Real Women with Real Curves

Klass is well known for its inclusive sizing, flattering cuts, and practical designs. It caters especially to women over 40, offering sophisticated wardrobe staples with forgiving fabrics and flexible fits. Sizing tends to be true to UK standards, with a bias toward comfort and mobility.

Key sizing traits:

• Consistent across dresses, trousers, and tops

• Stretch added to many fabrics

• Mid-rise waistbands and gentle tailoring

• Size range typically UK 10 to UK 22

Fit Verdict: True to size, and designed to fit generously through bust, waist, and hips.

Relevant read: Top Clothing Brands for Curvy Figures

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Is Klass True to Size?

Dresses: Flattering and Forgiving

Klass dresses—especially their midi and knee-length styles—often feature built-in stretch, elasticated panels, and ruching, which makes them forgiving across the midsection and hips. The fit is very accommodating, and most customers can confidently order their usual UK size.

Fit Verdict: Runs true to size, or even slightly generous in stretch styles.

See also: Top 30 Dress Brands & Sizing Comparison

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Tops & Blouses: Relaxed and Comfortable

Whether it’s a chiffon blouse or jersey top, Klass keeps the fit easy around the arms and bust. Blouses often include side vents or stretch lining, giving added room without bulk.

Fit Verdict: True to size with room to breathe. Ideal for fuller busts or broader shoulders.

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Trousers & Leggings: Comfortable Waistbands

Klass excels in creating trousers that fit real bodies. Many styles feature elasticated waistbands, mid-rise cuts, and tapered or wide-leg options. Fit is generally accurate, but some customers prefer to size down in elasticated pull-ons.

Fit Verdict: True to size. Size down only if between sizes and buying full-stretch waistbands.

Backlink: Understanding Waistband Fit – Elastic vs Zip

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Occasionwear: Structured but Consistent

For more tailored pieces like jackets, evening tops, or party dresses, Klass still maintains sizing consistency. Fabrics may be more structured, but cuts remain comfortable and flattering.

Fit Verdict: Still true to size—just check for fabric stretch before choosing.

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UK Sizing Breakdown for Klass

Here’s how Klass sizing aligns with typical UK body measurements:

Note: If you're used to slimmer high-street cuts like Zara or Mango, Klass will likely feel more comfortable and forgiving.

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Materials Used in Klass Clothing—and How They Affect Sizing

Most Klass garments are made with everyday comfort in mind. This includes:

• Jersey knits and viscose blends

• Stretch crepe and elastane-mix fabrics

• Lightweight poly blends with lining

• Soft denim with elastic waist

Tip: Check the fabric composition before choosing a size. For non-stretch woven fabrics, stay true to size. For jersey or knit, size down if in doubt.

Backlink: How Fabric Stretch Changes Sizing

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What to Buy from Klass

✅ Best Picks:

1. Jersey Midi Dresses with Ruching or Belted Waist

These are flattering, easy to wear, and adaptable for daytime to evening.

2. Pull-On Trousers & Tapered Stretch Leggings

Great everyday staples that move with you. Ideal for work or casual wear.

3. Printed Tunics & Longline Tops

Offer hip coverage, breathability, and effortless style. Ideal for layering.

4. Layered Occasion Tops with Chiffon Overlays

Stylish without being clingy. Works well for events and dinners.

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❌ Caution With:

• Stiffer woven dresses without lining – may feel snug in the arms

• Jackets with no stretch – sizing can feel tighter around shoulders

• Full polyester trousers – less forgiving if unlined or zip-fastened

Looking for looser-fit alternatives? Try: Relaxed Fit Brands & Their Sizing Profiles

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No More Guessing—Find Your Klass Size with Tellar

Don’t rely on size charts or mixed customer reviews. Use Tellar.co.uk to get instant size recommendations for Klass and over 1,500 other fashion brands.

With our Store Size Lookup Tool, you can:

• Enter your bust, waist, and hips (with our free tape if needed!)

• OR select your size in another brand (like M&S or Roman Originals)

• Get your exact Klass size instantly

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Why Tellar is the Easiest Way to Shop Smart

✅ Real brand sizing data—not averages

✅ One-time setup for lifetime size access

✅ Works across 1,500+ brands

✅ Free measuring tape for accuracy

✅ Always free to use—no gimmicks or subscriptions

With Tellar, you’ll never second guess your size again—even across different retailers.

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Follow Tellar for Real Fit Help

Stay updated on size-specific shopping tips, fit trends, and new brand reviews by following us:

• Instagram – @Tellarsizing

• Pinterest – TellarUK

• Facebook – Tellar Sizing

• X (Twitter) – @Tellar100

Browse all brand sizing articles here:

📌 Tellar Blog

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Final Verdict: Should You Shop at Klass?

Yes—if you want reliable sizing, comfort, and flattering designs.

Klass has built its reputation on clothing that works for women of all shapes, with sizing that aligns closely to UK standards and fabrics designed to move with your body.

And with Tellar.co.uk, you can remove all sizing uncertainty. We’ll tell you your perfect Klass size—plus your size in 1,500+ other brands.

✅ Find your Klass size now

It’s quick, free, and always accurate.

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Find your size in 1,500+ brands real-time. It’s free & easy — Try Tellar today