Finally, our long national nightmare is over ... Kristin Cavallari and Lauren Conrad are on good terms after the "Laguna Beach: The Real Orange County" reunion ... an experience Kristin dished about on her podcast.

Kristin announced, "Lauren and I are friends," on Tuesday's episode of "Let's Be Honest with Kristin Cavallari." Getty

This comes after their famous feud over a boy in the early 2000s. The two were caught up in a love triangle with costar Stephen Colletti, which boiled over when Lauren called Kristin a "slut" ... something she's since expressed regret about.

The bad blood made Kristin hesitant, at first, to even participate in the reunion.

She said, "I didn't actually want to do it, and I'm really happy that I did. It was such a great experience."

She added,

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