Could it be that J.Lo was doing her best to make her estranged hubby Marc Anthony jealous by wearing scandalous costumes and grinding on their best friend Pitbull?

Jennifer Lopez didn’t leave much to the imagination at the 2011 American Music Awards. The 42-year-old singer took the stage in a nude sequined bodysuit to perform her hit single “On The Floor”, and her racy performance alongside her dancer/beau Casper Smart left everyone buzzing!

Jennifer pretended to forget the words to her song “Until It Beats No More” and then her dress was ripped off and she began her sexed-up performance. At one point she was grinding her enviable derriere on Pitbull, who later performed with her soon-to-be ex-husband Marc Anthony.

We’ve never seen JLo act SO sexy in concert, do you think she was sending a message to Marc?

— Chloe Melas