Katy Perry nearly flashes all in a nude geometric cut-out dress as she makes surprise appearance on Vogue World Paris runway

Katy Perry went completely nude in a geometric cut-out dress as she walked the star-studded runway at Vogue World Paris on Sunday evening.

The singer, 39, made a surprise appearance on the catwalk in the barely-there ensemble and joined a host of celebrities.

She flashed her cleavage in the racy look and covered the rest of her modesty with floral motifs.

The beauty opted for a dramatic makeup look, a swipe of bold pink blusher and lipstick.

Katy strutted around the famed Place Vendôme in front of star-studded guests, wearing towering tie-up heeled boots.

A cohort of famous faces are taking part in the sold-out Vogue World event, celebrating 100 years of fashion and sport in the iconic city.

Guests include Gigi Hadid, Ciara, Maluma, Sabrina Carpenter, Emma Chamberlain, Kendall Jenner, Serena and Venus Williams, Bad Bunny, and Aya Nakumura.

Last year the event was hosted in London, while the year before the Big Apple was the backdrop for the high fashion extravaganza.

Those who were unable to get a ticket for the event will be able to watch the action unfold on a live stream, which will be hosted by Cara Delevingne.

This year’s Vogue World collaborated with youth athletic academies across France, pairing different sports with a history of 100 years of French fashion.

The sports include cycling, gymnastics, tennis, fencing, and break dancing, among others and the fashion will shine a spotlight on both modern and historic designers.

Artists who are expected to perform during the show include Bad Bunny and Aya Nakamura, although little detail has been revealed so far.

Speaking on the event, Vogue’s global editorial director and Condé Nast chief content officer Anna Wintour, said: ‘If Vogue World: New York was a street fair, and Vogue World: London was a glamorous night at the theatre…

‘Supporting arts and cultural organisations in London – Paris will be a kind of opening ceremony; one that celebrates 100 years of fashion and sport, as well as this extraordinary city.’

A percentage of the net proceeds from ticket sales will be donated to the humanitarian organisation Secours Populaire.

The organisation facilitates access to essential equipment for young, aspiring athletes across France.