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The initiative is to help young girls in Nawada district of Bihar speak up about their menstrual needs.
The festival is an open invitation to every member in society, irrespective of gender and age.
In De Wahls' workshop in her home in Brixton, in the south of her adopted city of London, visitors are greeted by portraits of women.
The campaign would begin on New Year's Day, to coincide with the Women's Wall, and conclude on March 8, international women's day.