Anita Loos effect 

This refers to men having a preference for blondes, as well as the supposed increased sales of magazines that feature a blonde on the cover. Named after Anita Loos, author and screenwriter, who wrote "Gentlemen Prefer Blondes."

We'll put a well-endowed blonde on the cover of next month's magazine and take advantage of the Anita Loos effect.

Anita Loos effect by Nora O'Shaughnessy December 1, 2007