We all remember their public friend-split as one of the most epic socialite spats, but Kim seems to have risen above any ill will towards her former partner-in-crime.
The 34-year-old took to social media to wish Paris a happy – albeit belated – birthday, posting a picture of the two girls back before they parted.
She captioned the photo: "Found this pic while unpacking! It's from 2006 in Ibiza. Happy belated birthday @ParisHilton"
Just barely twenty-something's, the two heiresses appeared fresh faced and closer than ever.
But it would only take one more year to drive the divas apart, going from besties to frenemies and finally enemies.
Paris famously made her real feelings clear when she called Kim's notorious backside "gross" like "cottage cheese inside a big trash bag."
According to Amber, Kim was the reason things didn't work out with Kanye – and she's prepared to dish all the dirty details.
Mums the word Kim!