So-Thin! has just learned that two of our fav emaciated gals Nicole Richie and Mary-Kate Olsen are going to be throwing the party of the year, and it ain't a Chrismmakuh party! Nicole and MK are throwing a "We Hate Paris Hilton" party, how Laguna Beach of them! The two have made pretty much everyone within a 15 mile radius of them aware of their dislike of the Simple Life socialite; the Nicole/Paris feud is right up there with East Coast/West Coast rap wars, and Paris stole MK's token Greek-shipping-heir boyfriend after dumping her Greek. We're hearing guests will include Bijou Phillips, Rick Solomon, Tinkerbell, and that homeless guy they paid $100 bucks to pour a soda on his head! Party activities include voting on Paris's most embarrassing moments of 2005 (nip-slips included) and karaoke of her new songs. We're probably guessing that "One Night in Paris" will be playing on a big screen too in all its night vision glory! And that's not all, Nicole and MK are encouraging guests to dress up like Paris too!! All we want for Christmas is an E-Vite!!!