Jennifer Lopez, who will take the stage again at this year's Billboard Music Awards, gave her back-up dancers a sexy workout during her 1999 rave-tinged performance of "Waiting For Tonight."

http://www.billboard.com/bbma/photos...a-moments-ever

This is her chance to get Dance Again Top 5.

I'm here for this tbh.

OMG, she is going to slay

Cannot wait.

YASSS! Making up for last year!

OMGSOGASG

YESSSSSSSSSSSSSSSSSSSSSSSSS



She bailed on my ass last year

this bitch I SWEAR

imma need me a KILLA PERFORMANCE

May 20th

YAS!!! There still a chenc for Dance Again!

She better not cancel like last year!!

YAASSSS! I was hoping she would perform!

Can't wait for her to shut it down like she did at the AMA's

That performance was

Hope DA stays in the top 20 till she performs it on Idol and BMA

Yes I'm ready for here to slay and save Dance Again!

Great!!