Candy Charms' visit became public knowledge only after she had returned home from Iran, and posted the above picture on her Instagram account. The photo shows her wearing a black headscarf which complies with the country's conservative rules on women's clothing.
"I only told my very close friends and family, as social networks and Twitter are banned so was hard to communicate," she wrote. Her message went on to describe the people of the Iranian capital Tehran as "so kind" and "generous".
