Pink and Christina have feuded ever since working together on their iconic hit “Lady Marmalade." Although the two barely took the rivalry beyond verbal jabs, Pink spilled some details about when Christina Aguilera got physical.

Christina swung a punch at Pink in a club

Pink guested on a Thursday episode of “Watch What Happens Live with Andy Cohen.” Cohen asked Pink during the show’s segment “Plead the Fifth” about her feud with Aguilera. The host wanted to know if she and Aguilera had ever gotten physical with each other.

"Actually, she swung on me in a club,” Pink said, looking back at the incident and calling it hilarious.

"I was like, 'What’s happening right now? What are you – what's happening?'" she recalled.

Where it all started

The iconic feud began while working on the cover of LaBelle's "Lady Marmalade" for the "Moulin Rouge!" soundtrack. According to Pink, the first encounter she had with Aguilera was far from a warm one. The artists involved in the collaboration for the cover had gathered for a meeting. Aguilera icily walked in with label executive, Ron Fair.

'What's the high part? What's the most singing part? Christina's going to take that part.” Pink revealed to VH1 how Ron Fair intruded without courtesy or a simple greeting.

The “Perfect” singer stood up and greeted Fair with unimpressed sarcasm, "She will not be taking that part. I think that's what the f**king meeting's about," she told him off.

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Their relationship was further strained when Aguilera paired with artist and writer, Linda Perry. Perry, who was a very close friend of Pink, wrote Aguilera's hit "Beautiful." Pink told VH1 she felt "betrayed" with Perry's choice to collaborate with artists that she "didn't particularly like."

"We were super young and super new at the whole thing. I think I'm an alpha and she's an alpha," Pink said of how the two initially clashed.

After years of feuding, Pink and Aguilera make-up

Pink ensured fans on the show that she and Aguilera have made up and that there’s no bad blood between them.

"We're fine," Pink said of the “Candyman” singer. She described Aguilera as incredibly talented and sweet.

According to Pink, the two made amends on the set of The Voice. She found the situation funny to look back on. Pink believes that over the years of not seeing each other, they both became moms and changed as people.

“We grew up and hugged it out. It's that simple, and I feel so good about that," Pink told Cohen.