Lady Gaga's "Vomit Artist" Defends Throwing Up Onstage

Brown added that she loves working with the "Born This Way" beauty because she really "understands performance art," noting that "working together is just quite powerful."

So when did the performance artist first discover that vomiting on canvas was her specialty?

"It was when I was 17," she shared. "I started exploring performance art and it was an idea that came to be because I wanted to use my body to create a performance that was about the beauty from inside out. I came up with the idea of actually vomiting a rainbow using my body as a tool to create paintings. It's also about the whole process of the painting. Obviously the paintings themselves can be beautiful or not, but the whole process behind it is what interested me."

Brown admitted that there have been both "positive and negative reactions" to her work, as evidenced by Gaga's performance, which drew criticism from many, including Demi Lovato, who accused the singer of glamorizing eating disorders.

"Sad… As if we didn't have enough people glamorizing eating disorders already. Bottom line, it's not 'cool' or 'artsy' at all," Lovato wrote after the duo's performance, adding, "Would you let someone bring a needle and shoot up on you? Addiction is addiction."