Princess
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/41/Marie-Catherine_de_Brignole-Sale%2C_Princess_of_Monaco.png/220px-Marie-Catherine_de_Brignole-Sale%2C_Princess_of_Monaco.png)
A princess is a female member of a royal family. A son of a monarch is called a prince. A princess may become a ruler by heredity or by marriage. Sometimes the expression "princess" is used when a woman has noble qualities such as kindness, charity, and virtue.