Steps:
1. Decide which era you'd like to be from. The two easiest are American Idiot (2004) and 21st Century Breakdown (2009).
2. For American Idiot: wear black skinny jeans, a black collared button down polo / t-shirt with a red tie, converse (preferably black with black laces) and a studded belt.
3. For 21st Century Breakdown: wear red or black skinny jeans a dress shirt with a vest, a studded belt, and your favorite pair of converse Chuck Taylor's.
4. Both looks require makeup. I'd suggest a black / grey smoky eye with some additional black eyeliner. (for Billie a la 21 Guns, do a brown smoky eye with black liner)
5. Don't forget the accessories! Bring a guitar, harmonica, something to play Green Day music on (mp3 player, CD player...etc...)
