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What’s My Clothes Size at Jack Wills? Does Jack Wills Run Big or Small?

Jack Wills is a British fashion brand with strong collegiate roots—known for its preppy style, casual basics, and laid-back but polished aesthetic. From striped rugby shirts and varsity hoodies to puffer jackets, jersey dresses, and tailored chinos, Jack Wills blends youthful style with wardrobe essentials for everyday wear.

But if you’ve ever wondered:
Does Jack Wills run big or small?
You’re not alone—and with a mix of fitted styles and relaxed staples, the answer isn’t always straightforward.

This guide breaks it down by category—and introduces Tellar.co.uk, the UK’s smartest free sizing tool that gives you your perfect Jack Wills size in real time, based on your exact measurements and the specific cut of the garment.

Does Jack Wills Run Big or Small?

Jack Wills runs true to size overall, but fit varies based on style and collection:

  • Sweatshirts, hoodies, and tees tend to be cut with a relaxed fit

  • Dresses, shirts and structured tops often run slimmer—particularly at the bust or waist

  • Jeans, chinos and skirts may feel snug at the waist or hips if you have curves

  • Outerwear like puffers and gilets usually run slightly large, allowing for layering underneath

If you’re between sizes or prefer a neater silhouette, you may want to size down in knitwear and sweatshirts, and size up in fitted trousers or dresses.

What Affects Jack Wills Fit?

1. Youthful Brand DNA

Jack Wills was originally built around university-inspired casualwear—so many items, like:

  • Hoodies

  • T-shirts

  • Joggers
    are designed for comfort and ease, meaning they tend to be slightly roomier than fitted fashion labels.

2. Mix of Casual and Tailored

Their range now includes:

  • Relaxed jersey basics

  • Tailored shirts and structured skirts

  • Form-fitting dresses and tops
    This means sizing varies by product and how it’s meant to sit on the body.

3. Fabric and Stretch

Typical fabrics include:

  • Cotton jersey (stretchy, forgiving)

  • Woven cotton poplin (no stretch)

  • Denim and twill (structured, varies by wash)

  • Polyester blends in coats and outerwear (true to size)

Jack Wills Fit Overview by Garment Type

Garment Type Fit Behaviour Tellar Sizing Tip
Hoodies & sweatshirts Relaxed, roomy True to size or down for closer fit
Cotton tees & polos Slim to regular fit True to size; size up if busty
Dresses (woven) Fitted at bust/waist Size up for hip or bust ease
Jersey dresses Relaxed, stretchy True to size
Trousers & chinos Structured at waist Size up if curvy or between sizes
Denim Snug at hips/waist Size up for comfort or non-stretch fabrics
Outerwear Designed for layering Stick to size
Knitwear Roomy, midweight knits Size down for slimmer fit

Jack Wills Size Chart (UK)

UK Size Bust (cm) Waist (cm) Hips (cm)
6 80 62 88
8 84 66 92
10 88 70 96
12 93 75 101
14 98 80 106
16 103 85 111
18 108 90 116

While useful, this chart doesn’t explain:

  • Which pieces are oversized vs fitted

  • How fabric affects sizing

  • Which of your personal measurements should drive size choice

That’s where Tellar.co.uk makes the difference.

Tellar.co.uk: Get Your Real-Time Jack Wills Size—Accurate & Free

Tellar.co.uk is the UK’s most accurate free sizing tool. It uses your bust, waist and hip measurements to match you to the correct Jack Wills size in each garment category—based on real product fit logic, not vague size charts.

Whether you’re buying a rugby shirt, midi dress, padded gilet or cord mini skirt, Tellar adapts your size recommendation to:

  • Fabric stretch

  • Intended fit (boxy, slim, oversized)

  • Your shape and proportions

How It Works

  1. Visit www.Tellar.co.uk

  2. Create your free profile

  3. Enter your bust, waist and hips in cm or inches

  4. Select Jack Wills from the brand dropdown

  5. Instantly get your correct size for hoodies, dresses, jeans, shirts and more

Your profile also works across 1,500+ other brands.

Why Tellar Works So Well for Jack Wills

✅ Fit-Specific Recommendations

Tellar adjusts your size based on how each category fits—e.g. down in hoodies, up in fitted denim.

✅ Fabric-Sensitive Logic

Stretch jersey vs structured cotton? Tellar takes that into account.

✅ Body-Proportion Based

Your most important measurement (e.g. bust for dresses, hips for jeans) drives the size result.

✅ One-Time Setup

Input your data once—get personalised size results forever.

✅ Totally Free

No subscriptions. No guesswork. Just accurate sizing.

Example: UK Size 12 Shopper

Measurements:

  • Bust: 91cm

  • Waist: 74cm

  • Hips: 101cm

Tellar might recommend:

  • Jack Wills hoodie: UK 10 (relaxed fit)

  • Jack Wills jersey dress: UK 12

  • Jack Wills cotton shirt dress: UK 14 (for bust comfort)

  • Jack Wills skinny jeans: UK 14 (snug fit)

  • Jack Wills quilted gilet: UK 12

Each result includes a short rationale, so you know exactly why it fits your shape.

Not Just for Jack Wills

Once your Tellar profile is saved, you can instantly get your correct size for:

  • Crew Clothing

  • Joules

  • Barbour

  • White Stuff

  • FatFace

  • Rixo

  • COS
    …and 1,500+ more UK and global brands

Final Thoughts

Jack Wills runs true to size overall, but some garments—especially slim-fit trousers and woven dresses—can feel snug depending on your proportions. Relaxed items like hoodies and tees tend to be generous, and outerwear is cut for layering.

Tellar.co.uk removes all the guesswork. It matches your shape to the fit logic of each item, so you get the right size the first time—no more returns, no more over-ordering.

“Find your size in 1,500+ brands real-time. It’s Free & Easy.”

Try it now:

👉 Create your free profile
👉 Log in anytime to view your Jack Wills size instantly

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