I haven't actually done this but it would be fun to dress up like the Friends gang from the TV show 'Friends'.
Someone could be each person. What you will need:
6 people(one for every person).
Rachel -brown wig or brown hair dye (hair should be straight), blue flair jeans, shirt should be tight (green is a good colour).
Have fun!!! When going around be sure to sing the theme song we all know how it goes "I'll be there for you!!.."
Phoebe -she wears kinda weird clothes cause she doesn't care what people think about her. So maybe like a flowered shirt with a zippered sweater over it. For hair a blonde wig (her hair is always straight) also wear like a little butterfly clip in it or a flower.Shusuallyly wears a skirt (purple maybe).
Joey - he's crazy so pick an out going guy that will wear maybe a flowered shirt and shorts or jeans. His hair is normally a crazysoo take gel and just mess it around.
Chandler - he is usually just going with the flow. Wear a normal button up shirt (blue maybe) and jeans. His hair is shortsoo just leave it how it is.
Ross - he is all about being proper. so something sleek.. maybe a suit if u can get one. And a tie definitely hair is jelled up @ the top to form a peek.
Thanks to anonymous submitter for this great idea!