Most people in the Middle Ages wore woolen clothing, and their undergarments were usually made out of linen.  Dye was fairly expensive, and so most clothing was its natural color, depending on what it was made out of.  The richer the wearer, the more colorful the clothing, the longer the jacket length, and the better the material.  Aristocrats and the wealthy tended to wear elaborate clothing that changed often with the styles.

    Redwallers typically wear tunics and habits, often covered with cloaks.  Sandals are common footwear.

bullet Tunics
bullet Habits
bullet Gowns
bullet Headwear
bullet Footwear
bullet Overshirts
bullet Pants and Breeches
bullet Cloaks and Capes
bullet Kimonos

For more information:

bullet The ULTIMATE Costuming Site
bullet Stefan's Florilegium - Clothing