But the two were not remotely friends. According to Pink herself, their rocky relationship started back in 2001, when they collaborated on the song “Lady Marmalade” for the Moulin Rouge! soundtrack along with Lil’ Kim and Mya. On a Behind the Music segment Pink did in 2009, she explained how the relationship between them got off to an absolutely terrible start.
“Ron Fair [the label executive] walked in. He didn’t say hi to any of us and said, ‘What’s the high part? What’s the most singing part? Christina’s going to take that part.’” Pink said. “And I stood up, and I said ‘Hi. How are you? So nice of you to introduce yourself. I’m Pink. She will not be taking that part. I think that’s what the f*****g meeting’s about.’”
And after that, the two appeared to be in constant competition. In 2002, Aguilera told the New York Times that she had been inspired by Pink to give herself a more edgy persona. She even hired one of Pink’s songwriters, Linda Perry, to work with her. Pink, though, was not remotely impressed.