The wore many thing they mostly wore stuff that the queens wore like fitted sleeved tunic under loose fitting tunic of a shorter length. They were made of silk cotton taffeta or lace. The fabric would be bright colors. The neckline would have been trimmed in either ermine fur or decorated with gems and lace.
They usually wore dresses made of silk or velvet. They only wore the finest clothes and jewelry. They also wore tiaras made up of jewels.
+princesses wore silky stuff like silky dresses or gold crowns or fancy velvet clothes
Princess's wore tunics. They were like dresses, but they were called tunics. You can read many books on it, why don't you look in books that take place in Medieval times.
Fancy velvet or silk dresses and silver or gold crowns.
Beautiful dresses, or gowns
A dress or possibly a tiara
Medieval clothes such as dresses