Miss Venezuela Ivian Sarcos receives her Miss World 2012 sash from Miss World 2011 by Miss World 2010, Alexandria Mills (R) in the Miss world 2011 World Final on November 6, 2011 in London, England. (Photo by Jeremy O'Donnell/Getty Images)

A sculpture entitled “Powerless Structures, Fig.101” designed by Danish artist Michael Elmgreen and Norwegian artist Ingar Dragset is unveiled on the Fourth Plinth in Trafalgar Square on February 23, 2012 in London, England. (Photo by Oli Scarff/Getty Images)

A girl rides a broomstick in front of a green screen at the new Harry Potter Studio Tour at Warner Brothers Leavesden Studios on March 23, 2012 in London, England. The studio, which includes the actual sets and special effects departments where the films were created and shot, goes on public display on March 31, 2012. (Photo by Dan Kitwood/Getty Images)

Chinese artist Song Dong stands in his installation entitled “Waste Not” in The Curve at the Barbican Art Gallery on February 14, 2012 in London, England. Waste Not comprises over 10,000 objects collected by Song Dong's mother over a period of 5 decades. The installation is Song Dong's first major solo exhibition in the UK and opens to the general public on February 15, 2012. (Photo by Oli Scarff/Getty Images)

International artist Yvette Mattern shows her stunning laser rainbow projection, Global Rainbow, on March 1, 2012 in Whitley Bay, England. The light installation celebrates the London 2012 Cultural Olympiad in the north-east of England. The Global Rainbow has previously lit up the skies of Germany, France and the United States. The projection will shine along the North Tyneside coastline for 4 days, before moving to other locations in the UK. (Photo by Bethany Clarke/Getty Images)

An employee looks at the artwork “4-Chlorephenol, 2008”, part of the artist Damien Hirst's exhibition “The Complete Spot Paintings” at the Gagosian Gallery on January 12, 2012 in London, England. (Photo by Matthew Lloyd/Getty Images)

An Sony PS3 is used to view Netflix during the Netflix UK launch in London, England on January 9, 2012. Netflix the leading global internet subscription service for films and TV programmes, launches in the United Kingdom and Ireland, offering instant and unlimited access to a broad range of entertainment for the low monthly price of £5.99 in the UK and £6.99 in Ireland. (Photo by Gareth Cattermole/Getty Images for Netflix)

Wellcome trust employee Zoe Middleton poses behind an artwork entitled “My Soul” by Katharine Dowson, which consists of a laser etched lead chrystal glass formation in the shape of a brain, and was created using the artists own MRI Scan, at Wellcome Collection on March 27, 2012 in London, England. (Photo by Dan Kitwood/Getty Images)