Salma Hayek and John Legend posed with activists Sharmeen Obaid-Chinoy and Mariane Pearl at a photocall for the new Chime For Change charity in London yesterday. The organization, which was founded by Salma, Beyoncé Knowles, and Gucci creative director Frida Giannini, announced that Beyoncé will headline a global charity concert in London on June 1. John, who serves on the Advisory Board for Chime For Change and will perform at the upcoming event, spoke at the concert's press conference about his involvement in the organization, which raises funds to improve the lives of women worldwide. He said, "All men should be feminists. If men care about women's rights, the world will be a better place." Florence and the Machine, Ellie Goulding, and Timbaland will also be performing at the event.