Paris Hilton is waging war against her former friend Kim Kardashian!

According to Us Weekly magazine, Paris flew into a rage at Las Vegas hotspot Lavo on August 13 when Kim ignored and publicly mocked her!

Paris also kicked off when she learned her protegee had been flown to the special event via private jet.

“Paris got so mad!” a source said.

“She could not believe Kim got a jet and she didn’t. She used to get the jets.

“Paris is upset at Kim — but it’s 100 percent jealousy.

“Kim is not only doing what Paris did, she’s doing it better, and everyone loves her.”

Paris went to re-school with Kardashian and took her to her first Hollywood parties.

“Kim should thank Paris,” said one source. “Paris gave her her career.”

Who do you prefer? Paris or Kim?