2. Paris Hilton vs. Nicole Richie

Once inseparable best friends, Paris Hilton and Nicole Richie turned their reality show, The Simple Life, into a global sensation. But in 2005, their friendship crumbled after a dramatic fallout, with Paris accusing Nicole of betrayal.
Their estrangement was fueled by Paris not inviting Nicole to key events, including a major Saturday Night Live gig. Despite their harsh words, the duo reconciled at a Simple Life premiere, proving that even celebrity feuds can have a happy ending.