Actress and United Nations Environment Goodwill Ambassador Dia Mirza on Saturday took pride in being associated with the organisation as the United Nations Day was observed on October 24. The former Miss India took to Instagram to educate the masses about the relevance of UN Day and about how it came into existence. “I’ve been a UN Environment Goodwill Ambassador and SDG advocate for over a year now and could not be more proud of the work the UN does every day. Sustainability and peace are extremely personal goals for me and I stand in solidarity with the UN in their mission and vision,” she wrote. In that spirit, here are other stars who have lent their support to global and Indian causes.