Sia was featured on "Beautiful Pain," a track off Eminem's recently released "The Marshall Mathers LP 2." The singer has agreed to donate the proceeds she received from the collaboration to the Los Angeles Gay & Lesbian Center, which serves homeless LGBT youth.

Eminem was recently questioned about specific parts of the "Rap God" lyrics from "MMLP2." There were some accusations of him being homophobic due to his anti-gay slurs, and the rapper addressed his critics during a recent interview.

"Not saying it's wrong or it's right, but at this point in my career - man, I say so much shit that's tongue-in-check," said Eminem. "I poke fun at other people, myself. But the real me sitting here right now talking to you has no issues with gay, straight, transgender, at all. I'm glad we live in a time where it's really starting to feel like people can live their lives and express themselves. And I don't know how else to say this, I still look at myself the same way that I did when I was battling and broke."

Sia recently took Twitter to also support that the rapper is not homophobic.

"I know personally that he is not homophobic, but a performance artist," the Australian singer who identifies herself as "queer" said. "I would never work with someone I believed to be homophobic. I respect that he can be misinterpreted in the worst way by the ignorami, and that scares me, but I respect him as an artist and person. He has a character called Slim Shady who represents the worst and darkest bile of America. I see how it can be unclear. But I assure you he is not homophobic himself.