M&Co Sizing Guide: How to Find Your Perfect Fit and What’s Worth Buying

M&Co has long been a trusted name in British high street fashion — offering versatile, affordable pieces for women, men, and children. Known for comfort-first design and inclusive sizing, M&Co is a go-to for everyday essentials, workwear, and occasion outfits.

But as many shoppers know, M&Co sizing can still vary across styles and product categories. Whether you're buying a casual knit, structured trousers, or a plus-size dress, knowing your true fit is key to shopping smarter.

In this guide, you’ll learn:

How M&Co sizing works
What categories tend to run large or small
The easiest way to get your perfect size via Tellar.co.uk — a free tool matching your measurements to 1,500+ brands instantly

Why M&Co Sizing Isn’t Always Consistent

Though M&Co offers UK-standard sizes (6–28 for women), actual fit can differ based on:

Material – Stretchy viscose and jersey pieces can run larger, while structured cotton or polyester blends fit snugly
Style cut – Flowy dresses or relaxed tops may be oversized; trousers and blazers can come up smaller at the waist or hip
Collection – M&Co's Petite, Plus, and Curve ranges often follow different fit models

For busy shoppers, figuring out the right size in each category is time-consuming — and returning items is frustrating. That’s why Tellar.co.uk was built to simplify the process.

🎯 Find your M&Co size instantly here – powered by real measurements, not guesswork.

How to Measure Yourself Correctly

Before you buy from M&Co, make sure you have the right measurements:

Bust – Measure around the fullest part of your chest
Waist – Measure at the narrowest point of your torso
Hips – Measure around the fullest part of your hips and bum

📏 No measuring tape? We’ll send you one for free — just ask, and it’s yours.

Then head to Tellar’s login page to create a free profile. You’ll get accurate size recommendations in M&Co and every other brand you love — in seconds.

M&Co Sizing by Category: What You Should Know

Tops & Knitwear

True to size in most jersey and viscose styles
Relaxed fit in many cardigans and jumpers
If you’re between sizes, you can often size down for a neater look

Tellar Tip: Jersey blends stretch; cotton knits retain shape — base your choice on how fitted you want your look.

Dresses

M&Co dresses vary by style:

Wrap dresses and shift styles are more forgiving and often run slightly large
Bodycon or structured midi dresses may run smaller at the waist and bust
Curve and Petite ranges are cut proportionally, not just scaled down or up

🧵 See our full guide to body shape and dress cuts to pick your most flattering fit.

Trousers & Jeans

This is where sizing gets most unpredictable:

Waistbands can feel tight in tailored trousers
Length may be long for petites, even in standard sizing
Elasticated waist styles offer more give, but sizing still varies by material

For trousers, it’s essential to go by both waist and hip measurements — which Tellar does for you automatically.

Best Buys at M&Co: What’s Worth Adding to Your Basket

1. Everyday Dresses

From floral wrap dresses to cosy knit midis, M&Co nails the brief for everyday wearability. Their styles are flattering, machine-washable, and come in inclusive sizes.

2. Trousers That Actually Fit

M&Co's pull-on stretch trousers and tapered leg pants are bestsellers for a reason. Comfortable yet smart, they work for office or weekend wear — especially in seasonal colours and prints.

3. Petite and Curve Collections

M&Co puts real effort into tailoring for petite and plus-size frames. These aren’t just resized versions of standard styles — proportions are adjusted to flatter your frame properly.