The Adventures of Notorious Ph.D., Girl Scholar: Keeping up appearances
"Really, though, my question is: when did academia become a glamour profession? It seems to me that there was a time when professors were expected to be a bit dumpy. Sure, there was That One Professor that everyone had a crush on, but that was exceptional.
Old School, Old Boy: This is an older gentleman in a full suit with tie (sometimes a bow tie.) Grey haired and confident, he and his cohort chat while relaxing in the lounge areas of the conference. In "head studies" this person is always a white male.
The Techie: This is our version of the geek. Khakis and a blue shirt, glasses. A neat, short haircut. Also invariably a man, although younger.
The Outdoorsperson: S/he is unconcerned about appearances. Clothing tends towards jeans or khakis and flannel shirts, all slightly ill-fitting. This person doesn't get haircuts frequently. Her or his hair is long and looks slightly unkempt. Beards are common for men. You can also tell this type by their skin. They tend to have slightly leathery or freckled skin from spending a lot of time outside.
The Rock Star (male): This guy is smart and he knows it. He has lots of hair gel, tight black pants, sunglasses and a leather jacket.
The Rock Star (female): She could be old or young, but she always has a short, spiky haircut, usually covered in gel. Like the male Rock Star, she tends towards fashionable, tailored clothing. She generally wears close fitting pants, black boots, a tailored jacket (often red) and an elegantly tied scarf.
I know there are more types, but those are the ones that stand out in my mind. Each of these types is associated with a particular sub-discipline, but I won't go into that.