Vinted users have been reacting angrily following a change that caused products showing incorrect sizing.
The popular resale platform has altered its size classifications for female and kids' apparel but did not contact all shoppers about the modification.
Countless users and merchants have taken to social media stating that platform listings now display a modified sizing category compared to what was initially listed because of the remapping.
The company said the new system was more in line with other platforms.
The platform has recommended to check their listings and update the measurements by hand if necessary, resulting in member annoyance.
Earlier, the sizes had both a single numeric size and a letter, like S/8 or M/10.
The updated approach includes a letter with a size spectrum for example S/UK 8-10.
With some products, the size labels have been reassigned - like an L measurement used to be a 12 but currently displays as UK 16-18.
A fashion influencer, who makes TikTok content about plus-size fashion, said the change "makes both selling and buying harder".
"Not many brands say XL is a 20-22," as the platform currently indicates.
A different member, located in Scotland, stated items she posted featuring size 14 markings were appearing on the platform as size 20–22.
"Should someone sized 20-22 purchase these they're going to be very disappointed," she explained.
A different user, based in Derby, stated she felt frustrated because the modification necessitated personal updates the sizes on "every single listing".
"This situation is especially annoying, as I'm chronically ill and platform income has been essential following partial earnings loss," she explained.
The service features exceeding 100 million shoppers, with 18 million British users.
It has proved a popular alternative compared to resale services such as eBay and Depop.
This is not the initial instance that an unexpected update to the app has proved unpopular: previously, the platform withdrew an update regarding delivery choices following member complaints.
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