Jennifer Lopez, Rihanna Pose Butt-to-Butt Backstage at iHeartRadio Music Awards: See
 

Jennifer Lopez, Rihanna Pose Butt-to-Butt Backstage at iHeartRadio Music Awards: See the ***y Picture!
Jennifer Lopez and Rihanna posed together backstage and compared their world-famous booties at the iHeartRadio Music Awards in L.A., Thursday, May 1 -- see their cheeky picture!This article originally appeared on Usmagazine.com: Jennifer Lopez, Rihanna Pose Butt-to-Butt Backstage at iHeartRadio Music Awards: See the ***y Picture!