Nope, you're not seeing double.A choir of Simon Cowell clones storm the stage with a performance of Tina Turner's 'Simply the Best' for the man himself.
Watch all this and more on brand new BGT this Saturday, 4th May at 7:30pm on ITV1, ITVX and STV.
See more from Britain's Got Talent at http://itv.com/BGT
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