People thought Christina Aguilera was pissed that Cardi B's shoe-throwing incident at the Harper's Bazaar New York Fashion Week party overshadowed her performance at the A-list event, but no! Xtina told Jimmy Kimmel Thursday night that her only regret is that she missed witnessing the fight!

The sexy chanteuse appeared on Jimmy Kimmel Live last night in support of her new album Liberation, but she dished on the scandalous even saying she wishes she "would have seen this juiciness go down." Aguilera explained that she didn't find out about the brawl until quite a bit later in the evening: "My hairdresser was like, 'I think you're going to be interested in something that happened while you were onstage.' I was like, ''What happened?' Then I heard there was a fight that went down during, first I heard it was 'Fighter,' my song 'Fighter,' which was so appropriate. I was like, 'Oh, my God! That's genius! My music makes people feel, it's invoking passion and emotion!' But then I heard it was during 'Genie in a Bottle.' And then I was like, 'What is going on?' But I do, like, a Migos version, so I was like, 'Ooh, Cardi got excited with that!'"

And as much as she was down with her own gig at the Icons event, Christina said, "That's where the real show was! Damn!"

Another juicy nugget from Aguilera's Kimmel appearance is that the diva said she'd love to do a duet with former rival Britney Spears! Xtina said if social media had been a thing back when they were young, the two probably would have orchestrated a collab to "squash" their "beef." Kimmel immediately posted on Twitter, tagging both sings and writing, "@Xtina would like to sing with you." Watch what Christina had to say ...