Fashion’s “vanity sizing” problem is costing the industry billions, trapping shoppers in brand loyalty, and driving a wave of costly returns. The tactic — where garments are labelled smaller than their true fit — flatters buyers but locks them into familiar brands while deterring them from trying new ones.
Research from Fytted and Arizona State University shows vanity sizing boosts confidence and loyalty. But the impact is huge: online apparel returns can hit 40%, costing the UK fashion sector £7 billion in 2022 (Vogue Business), while globally, returns totalled $890 billion in 2024 (Techstyle Edit). Many unworn items end up in landfill, undermining sustainability targets.
Sizing Solutions: Two Camps
• For the retailer — True Fit, Sizebay, Size Analytics: work within individual brand websites, effective for reducing returns but keep size data locked to that brand.
• For the consumer — Size Charter, Tellar.co.uk, niche category apps: designed to give shoppers cross-brand size comparisons and fit confidence.
Tellar.co.uk: Sizing Power for Shoppers
Tellar.co.uk covers over 1,500 brands, instantly matching shoppers to the right size from either body measurements taken with its free printable measuring tape or by converting a known size from another brand.
Unlike retailer-focused tools, Tellar works across multiple brands and operates without sponsorship or affiliate bias — offering independent, transparent, and brand-neutral advice.
“Vanity sizing is the quiet force shaping our wardrobes — and our waste problem,” says Ella Blake, founder of Tellar.co.uk. “We’re putting sizing power back where it belongs: in shoppers’ hands.”
The Call for Change
It’s time to take back control: buy less, buy better, and shop smarter. With independent sizing tools like Tellar, consumers can explore new brands with confidence, reduce costly returns, and make choices that are better for both the planet and their wallets.
Website: https://www.tellar.co.uk