The UK's first ever 'We Day' celebrations are well under way in London today.
Stars like Ellie Goulding, Jennifer Hudson and even royals like Prince Harry and Princess Beatrice have all come out to support the event at Wembley Arena, which youngsters could earn tickets to by committing to charitable acts.
The event was organised by the organisation Free The Children, and has already had great success in North America and Australia.
Other guests include businessman Richard Branson and UK singer Dizzee Rascal.
Click through our gallery to check out the rest of the 'We Day' action.
We Day UK
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Cressida Bonas, Sam Branson and wife Isabella Calthorpe, Princess Beatrice and Dave Clark at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry speaks at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry speaks at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry speaks at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry speaks at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry speaks at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry speaks at WE Day, Wembley Arena, London. (credit:PA)
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Malala Yousafzai gives a speech at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Prince Harry speaks at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Prince Harry and Cressida Bonas at WE Day, Wembley Arena, London. (credit:PA)
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Malala Yousafzai gives a speech at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Malala Yousafzai gives a speech at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Bernie performs at We Day
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Prince Harry
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Clive Owen arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Craig and Mark Kielburger, founders of WE, arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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We Day UK 2014(28 of77)
Ellie Goulding arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Clive Owen arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Jennifer Lawrence arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Malala Yousafzai (centre) and her father Ziauddin (right) arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Craig and Mark Kielburger, founders of WE, arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Ellie Goulding arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Cressida Bonas arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Princess Beatrice of York arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Ade Adepitan arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Ade Adepitan arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Clive Owen arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Holly Branson arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Malala Yousafzai arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Cressida Bonas arriving at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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Prince Harry apologises for not being Harry Styles
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Prince Harry
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Former US vice-president Al Gore
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Sir Richard Branson
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Holly Branson welcomes her father, Sir Richard Branson, to the stage
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Spencer West tells the Wembley audience how he overcame his disabilities to inspire others
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The Tenors
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The Tenors
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The Tenors
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Graham Moysey and Noel Penzer from Free The Children's digital partner, AOL, with canvas winner Grace Novakovic
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Noel Penzer from Free The Children's digital partner, AOL
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Graham Moysey and Noel Penzer from Free The Children's digital partner, AOL, with canvas winner Grace Novakovic
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Former Manchester United and England footballer Gary Neville on the Wembley stage
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Gary Neville is interviewed at Wembley for We Day
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Malala Yousafzai is welcomed to Wembley by the huge audience
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Malala addresses the Wembley audience
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Craig and Marc Kielburger talk of the inspiration provided by Nelson Mandela
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Prince Harry told the Wembley audience they had all done something 'amazing' to be there
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Prince Harry
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Prince Harry
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Prince Harry
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Malala Yousafzai gives a speech at the inaugural WE Day UK at Wembley Arena in London. (credit:PA)
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