To party or not to party? help please!!!!

i am really shy and really dont have a certian group of friends anymore because we got in a fight and i was invited to a party by the most popular guy at school. we are friends and stuff but i am not really friendly with all the popular kids. its not that they dont like me its just they aren't who i hang out with. i wnat to go to the party but i am nervous nobody will talk to me and i will look lame. should i go?