i haaaaate "dress up like any celebrity"
whenever someone uses that theme i just dress up like taylor swift or someone easily recognizable because if i dressed up like someone i actually liked (gerard way??? frank iero???) it would be ugly and if the host isn't familiar with the celebrity you're doing, then you're out.
some themes i love though (frequent hosts take notes!):
-dress like yourself irl
-dress like a music genre (as stated above!)
-60's, 70's, 80's, or 90's
-pajamas/sleepwear
-dress like a high school stereotype (slacker, jock, preppy, nerd, etc)