Jenny From The Block Used to Dance With New Kids On The Block!

You never forget your first job – especially when footage of it can be dug up and shown to the world!

Last night Jennifer Lopez paid Jay Leno a visit on his talk show and came clean about a little-known career move: The American Idol judge got her big break dancing back-up for New Kids On The Block!

“I got a job working as a back-up dancer for New Kids on the Block,” Jennifer said. “Dancing on the American Music Awards and it was a big deal.”

She continued, saying that the gig with the boy band was back in 1991, “a long time ago. There’s tape out there somewhere, for sure.”

Jay dropped the ball, announcing: “In fact, we have it right here.” An embarrassed yet excited Jennifer just shrieked.

What do you think of J. Lo’s look now in 2011 versus then in 1991?