Kelly O & Paris H - BFF?

I have been wondering for a while now about the "friendship" between Kelly Osbourne and Paris Hilton... Kelly HATES just about every other female in Hollywood, harboring a special kind of disgust for the hottest starlets (Christina Aguilera, Lindsay Lohan, etc.) so I've been questioning how on earth she ended up being buds with Paris.

Kelly says she likes Paris because she shows up for her parties and they "have fun together" but she also knows Paris isn't one to keep secrets... she says she knows anything she tells Paris will be all over the place, but she appreciates that Paris paid her own way to attend her birthday party in Vegas last week, and says "there's a sincerity about her."

Basically Paris just doesn't miss a party and since Kelly throws some benders, Paris shows up?

Here's the article from FemaleFirst.co.uk!