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Sister Jane Sizing Guide: How to Find Your Perfect Fit and What’s Worth Buying

Author: Stylist and brand team at Tellar

Date: 2025

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Sister Jane is one of the most distinctive brands in British fashion — theatrical, romantic, and always a little surreal. With its signature oversized collars, puffed sleeves, and vintage silhouettes, Sister Jane designs are made to stand out. But one thing that doesn’t always stand out clearly is what size you should buy.

Like many statement fashion labels, Sister Jane’s sizing isn’t standard, and variations between pieces can make online shopping a challenge. That’s where Tellar.co.uk comes in — the UK’s leading free sizing tool, helping you find your perfect fit in Sister Jane and over 1,500 other brands.

This guide covers:

  • How Sister Jane sizing works

  • Whether the brand runs small or large

  • Key sizing tips for different garments

  • Which styles are worth investing in

  • How to instantly find your size using Tellar.co.uk

What Is Sister Jane Known For?

Sister Jane occupies a unique place in the fashion world — fusing British eccentricity with vintage tailoring and bold details. Popular collections include:

  • Oversized bow blouses

  • Statement mini and midi dresses

  • Embellished jackets

  • High-neck Victoriana silhouettes

  • Ruffled organza skirts and sheer layers

Most styles are loose-fitting but structured, with unexpected tailoring twists. Sizes tend to vary across styles — particularly between rigid fabrics and softer constructions — so checking each fit is crucial.

Does Sister Jane Run Small or Large?

General Sizing Notes:

  • Dresses and blouses: Often run slightly small in the bust and shoulders, especially in structured jacquard or woven fabrics.

  • Skirts and trousers: Typically true to size, but less forgiving in the waistband due to minimal stretch.

  • Oversized pieces: Designed to look boxy, but armholes and chest widths may still run small on some body types.

Sizing Advice by Body Shape:

  • Petite frames: May need to size down in oversized pieces.

  • Fuller busts: Should check shoulder and chest measurements; Tellar can calculate bust-adjusted sizing.

  • Tall or long-torso: May find mini dresses very short — use Tellar’s height-aware recommendations.

Sister Jane Size Conversion Chart

Sister Jane Size

UK

EU

US

Bust (cm)

Waist (cm)

XS

6

34

2

80–84

62–66

S

8

36

4

84–88

66–70

M

10

38

6

88–92

70–74

L

12

40

8

92–96

74–78

XL

14

42

10

96–100

78–82

📏 Don’t guess! Use Tellar.co.uk to get your personalised Sister Jane size in seconds, using actual body measurements.

How to Measure Yourself for Sister Jane

1. Use a soft measuring tape — or request one free from Tellar.

2. Take the following measurements:

  • Bust: Fullest part of the chest, not under the bust

  • Waist: Narrowest point of the torso, above the navel

  • Hips: Widest part across the bottom

3. Input your data at Tellar.co.uk

You’ll get an instant size match — not just for Sister Jane, but 1,500+ other brands.

🟢 "Find your size in 1,500+ brands real-time. It’s free & easy" – at Tellar.co.uk

Best Sister Jane Pieces Worth Buying

1. The Embellished Mini Dress

Signature Sister Jane — often in brocade or stiff jacquard. Fit is tight in the bust and structured in the shoulders. Always check your chest measurement on Tellar before ordering.

2. Puff-Sleeve Blouses

Extravagant and oversized by design. While they look loose, shoulder seams can restrict movement — especially if you’re broad-shouldered.

3. Layered Midi Skirts

Perfect for partywear. No stretch at the waistband, so size accurately using your waist measurement.

4. Theatre-Style Jackets

Boxy but cropped, these jackets suit petite frames but may need up-sizing if layering over bulkier tops.

Sister Jane Sizing: Customer Feedback

“I’m a UK 10 but couldn’t get the bust zipped up in a Sister Jane dress. Used Tellar, sized up to an M, and the next one fit perfectly.” – Jess, London

“Their blouses are divine, but you need to check shoulder fit. I used Tellar’s profile and now get the right size every time.” – Mollie, Manchester

How to Find Your Sister Jane Size Instantly (with No Guesswork)

✅ Step 1: Create Your Profile

Go to Tellar.co.uk/create-profile and enter your measurements or known size from another brand (like Zara, ASOS or Reformation).

✅ Step 2: Get Instant Brand-Specific Recommendations

Tellar cross-matches your body data with Sister Jane’s actual size chart and fit tendencies.

✅ Step 3: Shop Smarter Across 1,500+ Brands

Once your profile is saved, you can use it on Tellar to check your size in every brand you love — including Ganni, Rixo, Kitri, & Other Stories, and more.

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Final Thoughts: Make Sister Jane Fit You Perfectly

Sister Jane is a standout label for a reason — but the fit isn't always forgiving. With statement styles and rigid fabrics, the key to loving what you buy is getting the size right the first time. Whether you’re shopping for a puff-sleeve blouse or a bow-trimmed mini, Tellar helps you make smarter choices.

Ready to get started? Find your perfect Sister Jane size at Tellar.co.uk

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