Article continues below advertisementJennifer Lopez is feeling the heat.The "Let's Get Loud" singer, 56, showed off her washboard abs in a barely-there bra and thong set while on stage in Washington, D.C., in a video posted via Instagram on Tuesday, December 2.Article continues below advertisementJennifer Lopez Stunned in a Fiery Bra and ThongSource: @jenniferlopez/InstagramJennifer Lopez hyped up the crowd while wearing a fiery bra and thong."See you THIS MONTH for The JLo Show in Vegas! Which song do you want me to PLAY ▶️!?" she captioned the sultry clip.