'Umbrella' star will help support UNICEF
The 'Umbrella' star is set to hit the big screen
Plus Al Green to be given Lifetime Achievement award
'Girl's Night Out Tour' begins in Chicago
Singer's homeland recognises her 'cultural contributions'
Singer says he took her aside for talk
Singer involved in smash after ceremony
Producer lifts the lid on the story behind the smash hit
They join Beyonce and Foo Fighters on list of performers