What you'll need:
Long-haired brunette wig
Purple tank top
Yellow backpack
A thick skin
Rebecca Black is very fun, fun, fun, fun, fun to make fun of. The much maligned teen singer became a viral video sensation earlier this year for her song "Friday," wherein she belts out laughable lyrics about the days of the week, her banal morning routine and the nail-biting decision of which seat to take in the car ride to school. For added authenticity, bring along a group of fresh-faced friends and carry a calendar. But don't worry, an actual singing voice is not required as Black's propensity for Auto-Tune means this costume can work for even the most tone-deaf.