She performed at the event and was one of the big winners, picking up prizes for International Female Artist of the Year and International Song of the Year for her World Cup hit, Waka Waka.
It's the first time the star has been seen out in public since she announced the break-up with Antonio de la Rua, her boyfriend of 11 years, earlier this month.
Usher was all smiles as he picked up an award for International Male Artist of the Year.
Also attending the event: Black Eyed Peas singers will.i.am and apl.de.ap and James Blunt.-The News