WHY PARIS HILTON HATES THE KARDASHIAN SISTERS GUTS!!!

Paris Hilton declares all-out war on former pals the Khardashian sisters for stealing her thunder!

The socialite ne'er-do- well is livid that not only did Paris give the daughters of OJ Simpson lawyer Robert Kardashian their first big break but now they've ice-ice-iced her in the fame game.

"Paris is furious that Kim got her start by hanging out in Hollywood with her -- and now, the Kardashians have it all, the reality shows, the magazine covers, the big appearance fees and promotional deals," an insider told The NY Post.

"She used to command $100,000 for club appearances, but now Kim is the hottest girl -- and they aren't friends anymore. The magazines are bidding around $300,000 for Kourtney's baby-shower and baby pictures. And Khloe's wedding brought in record ratings for E!" the source divulged.

"Paris has realized that standing for excess in a recession doesn't appeal."

Maybe it's time for Paris to start hitch-hiking across America in a poverty strapped version  of Jack Kerouac's On the Road  --  now's THAT's hawt!