1. Why Clothing Sizes Vary Between Brands

Understanding Clothing Sizing: A Technical Guide to Accurate Fit Across Brands

Despite global commerce and standardised metrics like centimetres and inches, clothing sizing remains largely unregulated. Brands have significant discretion when designing garments and assigning size labels.

Each brand develops its sizing chart based on a “fit model” — a person whose measurements align with their ideal customer. This results in discrepancies as different brands define sizes like UK 10 differently.

Vanity sizing further complicates matters. Brands often label garments smaller than their actual measurements to flatter customers, making size labels unreliable.

Regional differences add another layer of complexity. UK, US, and EU sizing systems vary significantly. Tellar’s sizing tool handles these conversions automatically: /store-size-lookup/

Clothing sizes based on actual body measurements are significantly more consistent. Using bust, waist, and hip data ensures sizing advice is accurate across brands and regions.

Tellar supports both metric and imperial units and uses this data to match users with over 1500 brands: https://tellar.co.uk

To measure yourself accurately:

- Chest (Bust): Measure around the fullest part of your chest, keeping the tape horizontal.

- Waist: Measure the narrowest point of your torso, typically just above the belly button.

- Hips: Measure around the fullest part of your hips and buttocks.

Tellar provides guidance on this during profile setup: /log-in-page/

Tellar standardises and normalises measurements, comparing them with brand-specific charts. It adjusts for fabric stretch, garment type, and regional sizing systems.

It uses an adaptive fit logic that takes garment rigidity, stretch, and fit style into account: /store-size-lookup/

Fabric affects fit. Stretch fabrics allow a tighter fit, while rigid materials require ease.

Garment cut also matters:

- Oversized: may allow smaller size selection.

- Fitted: usually matches body size exactly.

- Tailored: needs precision to avoid poor fit.

Consumers benefit from accurate size recommendations, reduced returns, and better online shopping experiences.

Retailers benefit from fewer returns and better customer satisfaction. Learn more: /contact/

Tellar is working on enhancements including fit confidence scores, body shape adaptation, and preference-based adjustments.

Clothing sizing doesn’t have to be confusing. Using tools like Tellar ensures better accuracy and shopping satisfaction.

Start here: /store-size-lookup/

Create a profile: /log-in-page/