Jennifer Lopez was left red-faced after a recent interview with Jay Leno where he surprised her with some very old footage of her as a backing dancer for a well-known American boy band. 

The 41-year-old singer, actress and American Idol judge recoiled in horror with her hands over her face as Leno played the clip and laughed uncomfortably once it ended. It showed her performing some dance moves that were only ever seen in the 90s behind the popular act New Kids On The Block. 

You can watch the full interview from May 10, where she talks about Mother's Day and her career as a performer, here: