The socialites' friendship has cooled over the last years amid claims that Hilton was jealous of Kardashian's rise to fame.
However, when the pair ran into each other at industry mogul Jimmy Iovine's Grammy after-party on Sunday, a source told Us Weekly that they decided to bury the hatchet.
'Paris came up to [Kim] and apologised, and said she didn't want to fight,' the insider said. 'Paris said she was happy for Kim's success despite what reports have said - Kim was sweet and accepted her apology.'