The Jenner sisters were booed while introducing brother-in-law Kanye West's performance at the Billboard Music Awards in May 2015. In May 2015, an episode of "Keeping Up with the Kardashians" premiered in which Jenner admitted to getting a lip augmentation. Her enhanced lips from lip fillers created speculation and gained her publicity. Prior to the episode's debut, Jenner stated that she merely used lip liner and over lined her lips. As a result, the practice of suctioning one's lips into a small glass in order to induce greater blood flow to swell the lips was called the "Kylie Jenner Challenge" (though there was no indication that Jenner herself employed this method). Jenner responded to this by stating, "I'm not here to try &amp; encourage people/young girls to look like me or to think this is the way they should look." In August 2015, Jenner announced that she would be launching her first lipstick line as a part of her self-titled lip kit under the name Kylie Lip Kit. In November 2015, the Jenner sisters appeared in singer Justine Skye's "I'm Yours" music video.