YouTube sensation Michelle Phan, whose beauty and style videos have earned her 6.7 million subscribers, is being sued for copyright infringement over the music in some of those clips. Ultra Records — which has been home to popular EDM acts like Kaskade, Deadmau5, and Calvin Harris — says Phan has regularly used (and profited from) music performed by its DJs without permission. Ultra hit Phan with a lawsuit last week, claiming that the YouTube star has repeatedly been told she doesnt possess the necessary rights to use tracks like Kaskades 4 AM in her videos, but apparently those warnings have fallen on deaf ears.