Macklemore + Ryan Lewis Win Best Rap Song for ‘Thrift Shop’ at 2013 Billboard Music Awards [Video]Macklemore + Ryan Lewis Win Best Rap Song for ‘Thrift Shop’ at 2013 Billboard Music Awards [Video]Macklemore + Ryan Lewis won Best Rap Song for 'Thrift Shop' at the 2013 Billboard Music Awards tonight (May 19).Amy SciarrettoAmy Sciarretto