A Timeline of Christina Aguilera & Pink's Feud - Here's Everything the Pop Stars Have Said About Each Other Over the Years

2001 – Pink and Christina Aguilera join forces for a cover of “Lady Marmalade”

The updated take on the track topped the Billboard Hot 100 for five weeks and won the collaborators the Grammy for Best Pop Collaboration with Vocals in 2002. They also performed at the ceremony. However, this is also allegedly where Pink and Christina started butting heads.