Vinted users have been reacting angrily following a change that caused listings displaying inaccurate size information.
This online marketplace has altered its sizing categories for female and kids' apparel but did not contact all users about the change.
Numerous buyers and vendors have taken to social media saying Vinted listings now show an altered size classification than originally posted as a result of the reclassification.
The platform stated the new system was more in line with similar services.
It has advised users to review their products and manually change the size when needed, causing user dissatisfaction.
Previously, the sizing featured one number and one letter, like S/8 or M/10.
The revised method features an alphabetical indicator and numerical range for example S/UK 8-10.
In some cases, the measurements have been reclassified - for example a size L was formerly size 12 but currently displays as UK 16-18.
A fashion influencer, who makes TikTok content about plus-size fashion, stated the update "complicates both purchasing and selling".
"Few clothing companies classify XL as 20-22," the way the service now categorizes.
Stephanie Gallen, from Glasgow, said garments she listed featuring size 14 markings were appearing on the platform as measurements 20-22.
"If buyers measuring 20-22 acquire them they're going to be very disappointed," she stated.
Another shopper, from Derby, stated she felt frustrated because the modification necessitated personal updates the measurements for "each individual item".
"This situation is especially annoying, because of my ongoing medical condition and platform income has been essential after experiencing income reduction," she stated.
The platform boasts over 100 million members, including 18 million in the UK.
It has become a favored option to second-hand platforms like eBay and Depop.
This is not the initial instance that an unexpected update to the app has proved unpopular: last year, the service retracted a modification concerning shipment methods due to shopper criticism.
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