A white singer ‘blacked up’ for American pop sensation Beyonce’s tribute act at a Cambridge University college, an incident that sparked outrage and prompted an apology from the organisers of the event at the prestigious varsity. Cambridge’s Robinson College was forced to apologise after the white singer was accused of ‘blacking up’ for the Beyonce performance at their May Ball. Leanne Harper took to the stage as ‘Beyoncee’ at the college’s annual May Ball event on Friday night.