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Justin Bieber is topping a new Forbes list of the highest paid celebrities under the age of 30. The 20-year-old pop star earned an estimated $80 million over the past year to land the top spot, mostly through his top-grossing "Believe" world tour. 

Right behind Biebs is One Direction, who were named Artist of the Year at Sunday's American Music Awards. The group took in a reported $75 million for the runner up position. 

Taylor Swift, who received the AMAs' first-ever Dick Clark Award for Excellence, was third on the Forbes list with $64 million in earnings, followed by Bruno Mars with $60 million and Rihanna with $48 million. 

Here are the top ten highest earning celebrities under 30, according to "Forbes": 

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