The flamboyant pop sensation Lady Gaga talks about the creative process behind her single "Applause." She explains how being forced to slow down by a hip injury actually helped her to focus, about working with famous names from the world of art, and exactly how much it means to her to be performing again for her adoring fans.

PopTopic TV: Rihanna is up for an amazing 18 awards this year, including the evening’s coveted Top Artist award. She started things off with her racy ‘S&M’ single, clad in a barely there, white patent leather dominatrix ensemble, slithering across the stage at the MGM Grand Garden Arena in Las Vegas on Sunday night.