Ultra Records Files Copyright Suit Against YouTube Star Michelle Phan

YouTube beauty sensation Michelle Phan, whose channel boasts more than 6.5 million subscribers, is being sued by Ultra Records and Ultra International Music Publishing for copyright infringement.

The electronic dance music label, which represents some of the biggest DJs in the world including Steve Aoki, Benny Benassi, Calvin Harris, and David Guetta, is alleging that Phan used a host of its artist's songs in her videos without a license -- and is profiting from them. The complaint, filed Wednesday in Los Angeles, names Kaskade as an artist she frequently uses (her video "Night Life Favorites," which offers tips about what to wear when you go out at night, uses his song "4AM" and has been viewed 1.4 million times).

According to a report from Reuters, Ultra says Phan was made aware she'd need to obtain a license in order to continue implementing the songs into her videos, but that Phan never did.

It's no secret that Phan makes serious cash from her vlog, with some magazines and news outlets reporting she made upwards of $5 million in 2013. Some of Phan's most popular videos, in which she teachers viewers how to look like Lady Gaga and Barbie, have been viewed more than 50 million times.