Canadian pop star Justin Bieber's signature hairstyle is basically the old helmet hairdo of a 1970s mom, only it looks like someone is blowing a fan at the back of his head, with the added detail of a swoop in the front that almost covers the eyes. Once you've got the hair down, a few additional details and accessories are all you'll need.
- Ski vest
- Dog tag necklace
- Voice-changing microphone
There are inexpensive Justin Bieber-like wigs to be found at costume retailers, such as the "60s Pop Icon Wig" and the "Bruno". If you want something a bit more over-the-top and DIY, make your own Justin Bieber "wig" by taking a bike or motorcycle helmet (preferably one that's bowl-shaped) and attaching foam craft sheets cut into teardrop shapes all over with a hot glue gun (be sure the tips point frontward to create a cartoony version of his famous hairstyle). Attach the "bangs" so that they cover the eyes and cut eye holes in them, if desired. Don't worry if part of the helmet shows through -- that's part of the gag.
Justin Bieber wears pretty run-of-the mill teen clothing, with a slight hip-hop edge; pair a ski vest with a black t-shirt and saggy-ish jeans, and accessorize with an oversized dog-tag necklace.
You'll need a microphone, of course. A video game headset with a microphone will work, but to go all out, pick up an inexpensive voice changer -- and make sure it has a high-pitch option, to recreate Bieber's pre-pubescent-sounding voice.