Beyonce, John Legend and Florence + The Machine are to headline a stadium charity show to raise funds for women's health, education and justice around the world.
They are among stars at the Sound Of Change Live concert to be staged at Twickenham Stadium on June 1, which will also be beamed around the world.
Beyonce is also acting as artistic director for the event, being held for the global campaign for girls' and women's empowerment, Chime For Change, of which she is a co-founder.
Other artists who will perform include Ellie Goulding, Haim, Iggy Azalea, Rita Ora and Timbaland with further names to be added.
Hollywood star Salma Hayek - who is on the organisation's founding committee - was in London today to announce the concert, for which tickets go on sale tomorrow.
Beyonce said of the event: "Our goal is to call for change for girls and women in the loudest voice possible.
"I am excited for us to come together on June 1 to bring the issues of education, health and justice for girls and women to the world stage."
The costs of the event are being underwritten by fashion firm Gucci, which founded the Chime For Change campaign, to enable more of the proceeds from ticket sales to go to charity.
It has been backed by promoter Harvey Goldsmith who was behind the Live Aid and Live 8 concerts and will feature short films to highlight women's issues around the world.
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