Other brands signed up to for #FashFest include ASOS, Boohoo, H&M, Next, River Island and Ted Baker.
The sartorial event will take place from 14 September at various venues throughout London. The first evening will see One Marylebone host The Lingerie Show, which will feature a catwalk show, canapés, champagne, cocktails and beauty treatments.
Battersea Evolution will stage the week's headline event, Catwalk to Cosmopolitan Fashion Show, on 17 September. The live runway show will feature the latest high-street trends that attendees will be able to purchase immediately from the retailers.
Wendy Martin, executive director of V.me by Visa, said: "Our sponsorship of #FashFest enables us to unite Cosmopolitan's fashion conscious audience, a large proportion of whom are millennials and therefore early adopters of new technologies, with some of the UK's leading fashion brands to deliver a better online shopping experience."
Ella Dolphin, group commercial director at Hearst Magazines UK, added: "Cosmopolitan is phenomenally in-tune with its hugely influential audience. Innovation has always been at the heart of its success and #FashFest is a shining example of this.
"Cosmopolitan will bring the brand to life beyond the magazine and provide young women with the ultimate fashion experience and exclusive access to some of the best-loved fashion brands in the country."
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