Dresses size guide

Finding the right dress size is key to looking and feeling your best. However, sizing can vary between brands and regions, making it tricky to choose the perfect fit. Our guide will help you understand how to measure yourself accurately and convert sizes across UK, US and EU charts, giving you the confidence to shop in store.

Browse Women's Dresses

How to measure yourself for the perfect dress size 

To find the correct size for you, take your body measurements by following the guide below:

A tape measure is required. 

Bust

Measure around the fullest part of your bust, keeping it level and snug, but not tight.

Waist

Measure around your natural waistline, just below your navel.  

Hips 

Stand with your feet together and measure around the fullest part of your hips.

Dress illustration showing bust, waist, and hip width measurements.

Women’s dresses size chart

Disclaimer: the following chart is for reference only. The fit of the garment may vary depending on the style, cut and fabric. 

Dress size & conversion chart

Find your size with this reference guide. Please note, actual measurements may vary slightly by style.

2XSXSSMLXL2XL3XL
UK/IRL4/66/810/1212/1414/1618/2022/2426/28
EUR32/3434/3638/4040/4242/4446/4850/5254/56
USA0/22/46/88/1010/1214/1618/2022/24
IT36/3838/4042/4444/4646/4850/5254/5658/60
UK/IRL46810121416182022
EUR32343638404244464850
USA024681012141618
IT36384042444648505254

Dress fits

Dresses come in a variety of fits that are designed to flatter different body types. Here’s a breakdown of our options: 

Bodycon

A figure-hugging fit that contours the body for a sleek, sculpted look. Perfect for nights out and smart-casual events. Bodycon dresses are typically knee-length or mini, but can also but a midi length.

A-line

Fitted at the top and flared at the bottom, it cinches the waist for an effortlessly elegant silhouette. 

Flared

Like an A-line fit but with a more defined waist, offering a playful shape.

Shift

A relaxed, straight-cut fit that skims the body, making it a go-to for casual styles.

Wrapped

Cinched at the waist with a tie detail, creating a flattering, adjustable fit for all body shapes. The length can vary from maxi, midi and mini styles.

Dress styles

From everyday looks to statement-making silhouettes, keep scrolling for our must-know dress styles. 

Maxi

A versatile full-length dress, suited to both casual and formal occasions. 

Midi

Falls between the knee and ankle, usually between 38-48 inches.

Mini

A shorter style that sits above the knee (typically 30-35 inches). A firm favourite in the summer months, or all-year round for a playful vibe.

Midaxi

Falls between midi and maxi lengths, around 45-55 inches.

Shirt dress

Inspired by the classic button-down shirt, this midi-length style is polished yet, relaxed.

Slip dress

A sleek, minimalistic style with thin straps and a flowing silhouette, usually midi or maxi length.

Tiered

Features layered fabric panels, adding volume and texture. 

Smock

Designed with a loose, relaxed fit. Perfect for casual outings.

Off-the-shoulder

Designed to highlight the collarbones and shoulders for a chic touch.

FAQs

How do I know my dress size?

Use our size chart and measuring guide to find your perfect fit. If you're between sizes, consider the fabric and cut—stretch styles offer more flexibility and may require a smaller size, while fitted designs may need sizing up.

What size is a 14 in dresses?

  • A UK size 14 in dresses typically corresponds to:

    UK 14 = US 10 = EU 42

    This is generally considered as a medium to large size. However, this can vary across different brands and styles. Use the Primark size chart to find the most accurate fit.

What is size 12 dress in UK?

  • A UK size 12 in dresses typically corresponds to:

    UK 12 = US 8 = EU 40

    It is generally considered as a medium size, though the fit it may vary depending on the brand and style.

Is a size 12 dress medium or large?

Primark size 12 dresses are considered to be a medium in UK and US sizing charts. Use our brand size chart to find the most accurate fit.