Photos: Woman sits naked on rooftop for four hours all in the name of art

A woman stripped naked and braved the autumnal weather on rooftop for four hours as a piece of unusual performance art. Puzzled passers-by couldn't believe their eyes when they spotted the nudist high above London's East End.
The artist, Poppy Jackson, was making the disrobed demonstration as part of an arty installation.
One witness, 29-year-old Raquel Rodrigues, was one of those taken aback by the strange sight.
She told the Evening Standard :