Unprincessly

She not only will never permit any one to touch her hair, which she always dresses and arranges herself, according to her own particular notions of grace and beauty, a thing which, I venture to think, and may perhaps suggest, is very unladylike, not to say unprincessly, savouring of plebeian independence, and low, artist-like individuality of taste, wholly unbecoming her distinguished rank and station;—[…]

Some of the papers, with questionable taste, present Mrs. [Alice Roosevelt] Longworth to their readers as the American “Princess.” There is nothing in her ways, bearing, or appearance to warrant the epithet which I give, as printed, in inverted commas. Her natural, unconstrained, yet lady-like, manners are the opposite of princessly. She has chic, which, too, is unprincessly. Most princesses are shy when they find themselves with ordinary people.

Switching from crying to laughing, Gabriella snorted—the most unprincessly sound she had ever made.