A mental state that a female exhibits out of reverse sexism. Because she is unaware of her sexism, she will claim to deserve supreme aristocratic rights from a partner due to her looks or her child-bearing "pain." Any brainwashed man will give her tangible things and emotional sublimity to stop her, and she will only demand more.
"Look at that lady; I'd go out with her, but she's got princess syndrome. Hookin' up with a good lookin' / intelligent guy like me would just make her condition worsen."
When a girl is deluded in thinking that she is a 'princess' & everyone else--such as her friends, family, & peers, are of secondary or little importance.
I wonder if Paris Hilton still suffers from the princess syndrome after her grandfather claimed that he's changing his will & no longer leaving his children & grandchildren his riches but rather, donating them to charity.