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Does the Brand PrettyLittleThing (PLT) Run Big or Small? What Is Their Sizing Like—and What’s Worth Buying?

Author: Stylist and brand team at Tellar

Date: 2025

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PrettyLittleThing is a powerhouse in UK fast fashion, known for bold looks, on-trend edits, and ultra-accessible pricing. But while the styles are eye-catching, figuring out what size to order can be frustrating—especially with bodycon fabrics, cut-outs, and inconsistent lengths. So the big question is: Does PLT run big or small?

💡 Tellar.co.uk helps you find your perfect PLT size—plus your best fit in thousands of brands, with more added daily. One quick (and free) setup, a free measuring tape, and instant sizing across every category. No guesswork. No returns. Always free.

In this guide, we’ll unpack how PrettyLittleThing clothing fits, how it compares to UK high-street sizing, what categories tend to run small or large, and how you can shop smarter with Tellar.co.uk.


About PrettyLittleThing: High-Speed Fashion, Variable Fit

Launched in the UK in 2012, PLT offers everything from:

  • Dresses for nights out

  • Influencer co-ords

  • Loungewear and basics

  • Swimwear and shoes

  • Plus, petite and tall collections

But with weekly new drops and thousands of styles, fit can vary massively, especially between fabrics (e.g. stretchy jersey vs woven satin) and cuts (e.g. oversized vs bodycon).

That’s where Tellar.co.uk comes in. We’ve already mapped how PLT really fits—so you don’t have to.


So—Does PLT Run Big or Small?

PLT generally runs small, especially in bodycon dresses, co-ords, and tailored pieces. Styles with stretch are more forgiving, but rigid or structured styles often require sizing up—especially for curvier builds.

Common Fit Trends:

  • Bodycon & slinky dressesrun small and short

  • Jumpsuits & playsuits – often tight at bust and waist

  • Tailored trousersfitted, may need to size up at waist

  • Oversized tees & hoodies – run large by design

  • Swimwear & lingeriecut very slim, especially in the hips

🧵 Use Tellar’s Store Size Lookup Tool to find your perfect size in PLT and thousands of other growing brands. We account for fabric stretch, cut, bust-to-hip ratios, and more.


PLT vs UK Sizing Chart

UK Size

PLT Fit Estimate

Notes

UK 4

XXS

Very tight in most styles

UK 6

XS

Tight in bust and waist

UK 8

S

True to size in stretch fabrics

UK 10

M

Size up for woven or zip styles

UK 12

L

Structured styles may feel small

UK 14

XL

Curvier builds may need to size up in trousers

UK 16–20

XXL+

Sizing varies—check each product’s stretch and cut

📏 Want exact advice based on your bust, waist, hips and height? Create your Tellar profile and we’ll match you to every fit—across PLT and thousands of other brands we’re adding daily.


Fit Breakdown by Category

1. Dresses (Bodycon, Corset, Maxi)

PLT is known for occasionwear that hugs the body—but these styles often run small.

  • Fit: Tight at bust and hips, may ride up

  • Size Tip: Size up if you’re curvy or between sizes

  • Tellar Tip: Tellar calculates stretch, rise, and length for each body shape


2. Co-ords & Matching Sets

Often consist of tight crop tops and fitted bottoms.

  • Fit: Tops run small, bottoms may roll or cling

  • Size Tip: Choose based on your larger measurement (e.g. bust vs hip)

  • Tellar Tip: Tellar provides separate fit recommendations for top and bottom pieces


3. Jumpsuits & Playsuits

These one-pieces often cause sizing issues at the torso or bust.

  • Fit: Can run short in the body or tight in the waist

  • Size Tip: Size up if you’re tall or have a long torso

  • Tellar Tip: Tellar adjusts for torso-to-leg proportion and bust height


4. Loungewear & Oversized Styles

From joggers to zip-up hoodies, PLT’s casualwear usually fits more generously.

  • Fit: Oversized by design

  • Size Tip: Stay true to size for a slouchy look

  • Tellar Tip: You can toggle between “relaxed” or “fitted” styling preference


5. Trousers, Jeans & Bottoms

Often high-waisted and fitted through hips/thighs.

  • Fit: Waistbands may run tight, fabric varies

  • Size Tip: Size up in non-stretch denim or zip-up trousers

  • Tellar Tip: Tellar uses your waist-to-hip ratio for better trouser matching


6. Swimwear & Lingerie

Cut small and often minimal in coverage.

  • Fit: Slim through hip and bust

  • Size Tip: Size up for coverage or cup support

  • Tellar Tip: Tellar adjusts swim and lingerie fits using bust and underbust data


Why PLT Sizing Causes Confusion

PLT adds hundreds of new products weekly, which makes sizing inconsistent. Some key challenges include:

  • Minimal fabric info (especially for stretch)

  • Different fit philosophies across categories

  • Styles not always modelled on diverse body types

  • Petite and tall ranges can still feel too short or long

  • Waist-to-hip fit issues for curvier shoppers

📏 Tellar.co.uk solves all of this. You enter your measurements once and Tellar uses real fit data to get it right across every PLT category—plus thousands of other brands.

🎁 Your free measuring tape is posted to you as soon as you sign up. Fit confidence starts instantly.


Popular PLT Styles (And How They Fit)

Slinky Ruched Bodycon Dress

Classic night-out style

  • Fit: Runs tight and short

  • Tellar Tip: Height and bust shape are factored into dress length and contour fit


High-Waisted Wide Leg Trousers

Often woven, structured and zip-fastening

  • Fit: Tight at waist, loose at hip

  • Tellar Tip: Waist-to-rise ratio ensures the waistband doesn’t dig or sag


Corset Tops

Usually wired or boned with hook-eye fastening

  • Fit: Small at bust and underbust

  • Tellar Tip: Bust circumference + underbust gives better lift/support fit


Petite Ribbed Jumpsuit

Staple in PLT’s basics range

  • Fit: Runs short in the body

  • Tellar Tip: Torso length calculated against full height for better one-piece fit


Related Tellar Fit Guides

Explore our full brand index via the Tellar blog or store lookup.


Why Tellar.co.uk Works for Fast Fashion Brands Like PLT

Tellar goes beyond size charts to provide smart, shape-specific recommendations across the fastest-growing brand catalogue online.

✅ Free tape measure

✅ One-time setup

✅ Bust, waist, hip, torso and length logic built-in

✅ Works for PLT and thousands of other brands (and counting!)

✅ 100% free, no ads or upsells

📏 Create your profile now and let Tellar recommend your exact PLT size—and your best size across all brands you shop.


Follow Tellar for Weekly Fit Drops & Smart Shopping Tips


Final Verdict: Is PLT True to Size?

Mostly no—PLT runs small in many fitted styles, and sizing varies across fabrics. Their casualwear and oversized items are more forgiving, but tailoring and occasionwear are hit or miss without proper sizing insight.

🎯 Let Tellar.co.uk take out the guesswork. One profile. Smart results. Real fit confidence.


✅ Start Now

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