In August of this year, the two reconciled while on "The Voice," but not before things got physical.
"She swung on me in a club -- it was hilarious," the "Beautiful Trauma" singer told Andy Cohen during Plead the Fifth on "Watch What Happens Live" Thursday night. "I was like, what's happening right now?"
When asked what prompted the reconciliation, P!nk said, "Women have to learn how to support each other, and it's not taught to us on the playground. She's so talented, and deep down, I've had bad days, too," she added. "She's a really sweet person."
P!nk attributed their differences to the fact that she and Aguilera both have alpha personalities and they were both "super young and super new" when they began their singing careers around the same time.
She also added they may have a new song coming out together: "We may or may not have already collaborated. I don't know if I'm allowed to say that, but I did."
Cohen then grilled P!nk about the time she called Kanye West "the biggest piece of sh-t on Earth" after he hopped on stage at the 2009 VMAs to interrupt Taylor Swift's acceptance speech.
"I think he's a talented genius," P!nk said when asked how she feels about Kanye now. "I just think some of us can't get out of our own way sometimes."
Later, she was asked about Twitter comments many assumed were about West's wife, Kim Kardashian, when she wrote, "Shout out to all of the women, across the world, using their brains, their strength, their work ethic, their talent, their 'magic' that they were born with, that only they possess. It may not ever bring you as much 'attention' or bank notes as using your body, your sex, your tits and asses, but women like you don't need that kind of 'attention.'"
P!nk copped to it, saying, "Honestly, she went in on Bette Midler, and if you go in on Bette Midler, you're probably gonna hear from me. You just don't talk to Bette Midler ever about anything."
Another caller also asked the singer if any of the women she parodied in the music video for "Stupid Girls" ever confronted her about it.
"Paris [Hilton] was upset with me," she explained. "I was at a club. She said, 'I just want you to know that I get it, like, I'm not dumb, I just play like I'm dumb.' And I was like, 'That's kind of my point.'"