There have been outstanding alpha female characters in fiction (commercial and literary) since the dawn of time. But I happen to believe this is a great time in the commercial fiction world to develop and craft outstanding leading ladies.
In fiction - especially romance- we've heard the term Alpha Male for years. It usually refers to the male lead (hero) who is an opinionated, take charge, 'my way or the highway' sort of character. He knows what he wants and (he thinks) he knows how to