‘NSYNC’s Chris Kirkpatrick Sings ‘Bye Bye Bye’ in Tutu for 47th Birthday

'NSYNC's Chris Kirkpatrick took it all the way back to 2000 for his 47th birthday -- and then he took it even further by doing it in a tutu and a sash. The ex-boy band member celebrated the big 4-7 Wednesday at Jason Aldean’s Kitchen +…