Kelly Osbourne is looking back on a teenaged feud with Christina Aguilera.

The 38-year-old musician and reality star was pitted against the 42-year-old “Dirrty” diva in the early ’00s.

During a recent interview, Kelly admitted that she thought they’d never get along because of how the media presented them. However, she revealed what changed to help them make amends.

Read more about Kelly Osbourne and Christina Aguilera’s feud…

While on E! News with her mom Sharon Osbourne, Kelly was asked about past feuds.

“I will say that all of the people that I have had feuds with, I’ve ended up in the long run becoming friendly with them,” she reflected.

She continued, mentioning Christina. “My biggest feud that I think that people cared about was me and Christina Aguilera when I was like 16. And we were like pitted against each other in the media for so many years that we both thought that we didn’t like each other,” she said.

What changed: “Then we actually sat down together at a Christian Dior fashion show and ended up really liking each other. It was a lovely experience.”

Elsewhere in the interview, Sharon revealed who she thought was the rudest celebrity.

Recently, Kelly revealed the best thing that’s ever happened to her.

Press play on the interview segment below…