Richie, Olsen plan "We hate Paris" party

Nicole Richie has agreed to attend a star-studded "We Hate Paris Hilton" festive party.

The Simple Life star, who fell out with Paris earlier this year, will join Mary-Kate Olsen and Bijou Phillips for the bash at the end of this month.

Mary-Kate announced that she was no longer speaking to Hilton earlier this week, claiming that she stole her boyfriend Stavros Niarchos. Meanwhile, Bijou has clashed with Paris several times while on the party scene.

Guests have been encouraged to dress as the hotel heiress, perform her song Screwed and vote on her most cringeworthy moment of the year.

A source told the Daily Star, "You can't help feeling a bit sorry for poor old Paris. They are even considering filming the party and putting clips of it on the internet."