The feud between Pink and Christina Aguilera went on for years after the pair collaborated on Lady Marmalade.
Now, Pink is dishing on how bad things got between the pair.
Watch What Happens Live host Andy Cohen asked the singer how she and Christina made amends and what was their biggest issue, reports News.com.au.
"We were super young and super new at the whole thing. I think I'm an alpha and she's an alpha," Pink said. "And I'm used to taking my altercations physical and she's used to having them verbal. We're just very different."
"Women have to learn how to support each other. It's not taught to us on the playground."
Cohen then asked Pink if she attempted to get physical with Christina.