Ralph Lauren - where the models walk on water.

Stylist's Executive Fashion Editor Kitty McGee and Shopping Editor Lucy Reber are reporting on the SS15 trends at New Fashion Week - keep track of their updates here.

New York Fashion Week SS15 has been a source of digital innovation; Versus presented its first shoppable runway, while Tommy Hilfiger's new 'Social Concierge' service has been instantly delivering editors any digital assets they could think to request at the click of a button (or rather in response to a tweet or email).

All sounding practical and useful so far - but not blowing your mind, right? Well prepared to be blown away. Ralph Lauren presented its new Polo collection via a water-screen projection that towered above the lake in Central Park. The fusion of fashion, art and technology was created using light, projected onto a huge fountain of water from the lake to create a truly stunning 4D spectacle.

Editors watched on in amazement as the final scene saw Mr Lauren himself take a bow, as we would expect at a typical fashion show. The event also celebrated the grand opening of the first ever Polo flagship store on Fifth Avenue.

See for yourself (runway action kicks in at 0.30)

Watch Ralph Lauren's fashion spectacular