Only one word can sum up Paris Hilton and Nicole Richie's Simple Life reunion: Sanasa? Sanasa. Sanasa!

Ahead of teaming up for another TV outing over 20 years after they made early-aughts pop culture history across their popular fish-out-of-water reality docuseries, Hilton and Richie, both 43, have revealed that their new television project Paris & Nicole: The Encore will forge new territory while drawing nostalgic inspiration from The Simple Life's past — particularly as its plot revolves around the duo staging an operatic performance of their made-up hit song "Sanasa."

"The idea of the opera was very unexpected, and that’s exactly why we loved it," Hilton said in a new interview with W magazine, while Richie explained, "What people need, even though they don’t know it yet, is for 'Sanasa' to be an opera."

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Richie elaborated: "We wrote a song when we were about 7 years old called 'Sanasa.' When we were shooting The Simple Life, it was just our little inside joke, but it became an international sensation. People loved it."

Hilton added that "both of us have been approached so many times over the years with different concepts," but this specific opportunity represented "perfect timing" for them to finally reunite, which Richie said "came up organically" as she texted Paris with the idea over the Christmas season last year.

"She said it was about to be the 20-year anniversary. I wrote her back, 'Should we do something L-O-Ls?'" Richie recalled. "We gave it room to marinate, and it just felt right. No one else was involved at first."

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Of filming the show, Hilton admitted that she feels like they're "teenagers again" while on set, and also dispelled rumors of a past feud that was widely speculated to have impacted production of the series' original run.

"There was not necessarily a Will Smith and Aunt Viv sit-down. I know for people who followed The Simple Life, that was a very big part of it. There was a whole season where we didn’t shoot together. But our lives are so braided together outside of that. Our relationship has spanned almost 40 years. So for us, I think that was more of a little blip," Richie recalled, while Hilton added: "The media during that time was very into creating feuds between people and exaggerating and inventing stories to sell tabloids. The world was definitely making a way bigger deal of it than it actually was. Nicole and I have been best friends since we were 2 years old. She’s like my sister."

During its original run, The Simple Life spanned five seasons between 2003 and 2007, and documented the socialites as they visited rural America and attempted to immerse themselves in small-town society, including working jobs on a farm, at a fast food restaurant, and more.