If Britney Spears ever needs an understudy to give her a night off on her Circus comeback tour then here is just the MAN for the job. Take a careful look at these photographs ‘One More Time’ – because this is actually drag queen Derrick Barry dressed up as the pop princess. The Britney impersonator achieves his incredible transformation using only make-up and “smoke and mirrors”. And although he is going to busy performing his own mini Circus tour, Derrick is making a tongue-in-cheek offer to fill in for his music idol if she ever needs a break from her exhausting schedule. The 25-year-old made headlines as a contestant on the last series of America’s Got Talent, when his raunchy performance in Britney’s famous schoolgirl outfit had judge David Hasselhoff questioning his own sexuality. Now he has added the superstar’s Circus ringmaster costume to his spectacular wardrobe.