A mass pillow fight in Trafalgar Square in central London on April 5, 2014 on International Pillow Fight Day. (Photo by Jane Scanlan)

A visitor poses with artist Joyce Pensato's artwork “Mickey for Micky” at the Frieze Art Fair in London, October 14, 2014. (Photo by Luke MacGregor/Reuters)

A gallery assistant poses with the 1972 work “Secretary” at a press viewing of the artist's exhibition “Allen Jones RA” at the Royal Academy of Arts in London November 11, 2014. (Photo by Neil Hall/Reuters)

Models walk the runway at the annual Victoria's Secret fashion show at Earls Court on December 2, 2014 in London, England. (Photo by Tim P. Whitby/Getty Images)

A young boy adjusts his friend's Adolf Hitler mask during a game on a street in King's Cross, London. (Photo by William Vanderson/Getty Images). 1938

Entertainment One is attempting to set the Guinness World Record for the longest chain of brides in one location at HMV, Oxford Street on March 11, 2012 in London, United Kingdom. The event was held to celebrate to celebrate the DVD release of The Twilight Saga: Twilight Breaking Dawn Part 1 (Photo by Dave J. Hogan/Getty Images)

Artist Richard Neave admires the sculpture “Sprinting” that he created with Denise Smith on March 12, 2012 in London, England. The model shows the body of elite athlete, Richard Whitehead, and forms the centre piece at the Anatomy Of An Athlete Exhibition opening at the Hunterian Museum. (Photo by Bethany Clarke/Getty Images)

LONDON - JUNE 04: A piece entitled “Entrance into wood” by Elke Krystufek goes on show at The Royal Academy Summer Exhibition on June 4, 2008 in London. In it's 240th year, the exhibition displays a wide range of recent work by both established and emerging artists. 10,000 artists submitted work for selection this year. (Photo by Peter Macdiarmid/Getty Images)