NICK CARTER of the BACKSTREET BOYS.Pop groups NKOTBSB (New Kids On The Block and Backstreet Boys) performs at a stop on their "NKOTBSB TOUR 2011" held at the Consol Energy Center, Pittsburgh, PA, USA. .June 15th, 2011.nkotb stage concert live gig performance music full length black leather jacket dance dancing jeans denim singing leg foot up side.CAP/ADM/JN.©Jason L Nelson/AdMedia/Capital Pictures.