What to wear for a hollywood themed party?

me and my friend have been invited to a fancy dress party which is themed hollywood. I have blonde straight hair and she has brown curly hair. what should we go as?|||you should wear a long fancy dress and a big fluffy jacket and lots of jewlery, thats what comes to my head when i think of hollywood.|||taylor swift and miley cyrus!!! if you like them. or u can go as paris hilton and she can be her old BFF that was like just using her!