Hi Kah,
perfom the dares in order on the same day consecutively:
GET READY: your shortest and tightest Hotpants- preferably shiny; a sexy top, the riskiest and most revealing top that you could possible wear on a night out; no bra; footwear of your choice
HIKE 1.5h in this outfit; start and finish by walking through a busy part of town.
DRESSING ROOM - I assume the curtains will be open? You'll need excellent timing not to get caught. Report back in what kind of store you performed the dare and who was in the store.
RAMP IT UP