Leggings, tunic, boots, codpieces, maybe a cowl - this could come up and become part of their headpiece under their helmet in battle (fits around the neck much like a nun's habit) - but on a everyday basis...hard to say. Gloves.
Well they just wear regular days cloths.
you wear them out by wearing the for 24 hours and 7 days a week
knights wear armor such as mail that protects their upper half
Some wear a garter hence Knights of the Garter (K.G.). Knights might also wear woolen under garments. When not wearing amour (modern day) on official functions, they wear a cap and robe.
Sabatons
clothes
The wear shining armor.
They would wear suits of metal plate armor, but early knights wore tough leather
ARMA
Shoes
feet
Knight is a title or honor of sorts. There are still lots of knights today in countries that have a King or Queen. One example is Great Britain. Todays knights who wear armor, are people who have fun at events similar to Renissance Festivals or other shows. But the real knights in Great Britain are just people who wear regular clothes but are a knight because of something they did or else got it from their parents.