Toronto’s annual arty blowout is happening this Thursday, which means that the city’s partygoers are in serious prep mode. Even for those who don’t circulate often, Power Ball is a big deal. Every year, the Power Plant comes alive with installations, open bars and flashbulbs. As such, you can imagine the importance placed on wardrobing. If you’re going to this year’s event and still don’t know what to wear, here are 12 tips from some of Toronto’s hippest partygoers and some of those involved with this year’s festivities.