Singer Jennifer Lopez thinks it is a pop star's job to push the boundaries, insisting the muziki scene would be 'boring' if they didn't. The 41-year-old has defended the likes of pop nyota Rihanna, who has recently caused controversy with her racy performances, saying artists like her have to take risks with their stage antics. The On The Floor hitmaker told British nyota magazine: "It's part of our job to push the envelope and test the boundaries - if wewe don't, it gets boring. "So I upendo everything. I'm an artist and I upendo that's what they do. wewe can't ask them to not be who they are."