First things first: Are you a Jackie or a Marilyn? Jackies prefer headbands, poofy dresses, plaid, inauspicious earrings, and pearls. Marilyns go for clingy dresses, rich, solid colors, pencil skirts, and plunging necklines. That extra something: A pointy bra

Of course the men have it easier: somber, conservative suits, french cuffs, narrow ties. And shorts in the office if you're Pete Campbell, called into work on the weekend. That extra something: A fedora

You'll need a bald cap, red overalls, and an unnatural desire to kill your mother. That Extra Something: If your head is shaped like a football, you can't go wrong.

The challenges are so vague this season — a natural disaster? — that you can pretty much wear anything. That extra something: Hunger.

One of the easier costumes. Jeans, a T-shirt, a black leather jacket. That extra something: A Ford Mustang Shelby GT500KRF that transforms into an 150 FX4 pickup truck, a Ford E-150 and a Ford Crown Victoria Police Interceptor. Must be voiced by Val Kilmer.

Dark suit with vibrant button-up shirt, ring on thumb, deep tan, bald head, meticulously-maintained soul patch That extra something: Lots of hand sanitizer.

No need to show up at all. Say you were there but no one saw you. That Extra Something: Edgy haircut, but again…

Dwight's outfit can come directly from Grandpa's closet, and you can probably steal his wire glasses too. Wear black socks and part your greasy hair down the middle. Or just wear glasses and a Battlestar Galactica T-shirt. For Angela, lacy high collars, headbands and kitten shirts are a must. That Extra Something: A sack full of party planning supplies.

Good news: If you're a brown-haired white lady with glasses, everybody already tells you every day how much you look like Tina Fey and/or Sarah Palin. That extra Something:: Pen or rifle, depending

Facial scruff, a gruff demeanor, messy hair and a sportcoat. That extra something: Pills, and good American accent. If you happen to be British.

A skeleton costume, to simulate intrusive camerawork That Extra Something: Detectives looking at your X-rays and talking to the person who killed you, like he can hear them or something

Surgical scrubs, white coat. That extra something Lustrous chestnut hair, eyes like saucers, skin like cream, a thousand-watt smile and a certain girl next-door-je ne sais quoi you can never hope to attain

Jeans, bowling shirt (or shiny going-out shirt), effortless, unkempt hair That Extra Something: Hookers