The young designers and ELLE April coverstars, who have no formal design training, feature alongside industry greats Coco Chanel, Christobel Balenciaga and Azzedine Alaïa; all chosen for their unquestionable impact on the world of fashion since 1923, the year of Time’s release.

The Olsen’s launched their brand in 2007, following Ashley’s quest to find the perfect T-shirt – a mission that has since inspired a chain of diffusion lines, Elizabeth & James, Olsenboye for JC Penney and StyleMint with each encompassing their signature boho appeal: . ‘We just want to create beautiful things,’ she told us in – and now with Time backing their efforts, it seems the design duo have proved that they really are two of a kind.

Categorised by designers, brands, models, muses, photographers, editors and stylists, the list classes each mention as a visionary chosen for their individual influence on the evolution of style.

On the model front, Twiggy, , Jean Shrimpton and Naomi Campbell seal the stamp for Britain, making it 4 out of 10 for the UK; while and have unsurprisingly found their place in the muse category – though we can’t help but wonder, where is ?

Check out the twins' style files: Mary-Kate and Ashley