Which retail sustainability initiative holds the Guinness World Record for the largest clothing swap, promoting circular fashion?

The world of retail has seen some truly remarkable achievements that have earned their place in the Guinness World Records. From the largest stores to the most expensive products ever sold, these retail milestones showcase the extraordinary side of commerce. Test your knowledge about these record-breaking retail innovations and achievements that have pushed the boundaries of what's possible in the world of shopping and consumer experiences.

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H&M's Garment Collecting Program (2019, Stockholm) with 12,768 participants exchanging over 35,000 clothing items
Global Fashion Exchange's 'Swap Shop' (2015, Dubai) with 20,242 participants exchanging over 41,000 clothing items
Patagonia's Worn Wear Festival (2018, San Francisco) with 15,921 participants exchanging over 38,000 clothing items
Levi's Second-Hand Revolution (2017, London) with 18,545 participants exchanging over 40,000 clothing items