Replying to How to make friends / get invited to parties

Soooo..... i always see pictures on facebook of these people having sick parties. but i never get invited.
i have come to the conclusion that im not friends with any of the people who throw the parties.

so im wondering how i make friends with the cool guys/ hot girls who throw parties so that i can get invited to them so i have something to do other then surf NS every fucking night.
and no, i cant just walk up to them and say hey, wanna be friends? i have gone to school with these people forever, that would be weird.
and one more issue, all the people who have these parties are mad perps, so i don't exactly fit into their cult thingy because im not rich, dont play golf or wear pastel colored khakis and golf shirts to school every day.

please help