Is a boys mushroom cut ok for a woman?

My wife has always worn her hair quite short, but this weekend she got it cut into what I would call a boys mushroom cut. Basically the top is cut just like a regular short, layered, ladies haircut, about one and a half inches long. But its the back of the haircut thats different. There is a very straight, severe, weight line cut straight across at the tops of her ears, and the hair below the line is buzzed to stubble. Back in the nineties it was somewhat common to see this style on women, but today you only see it on three year old boys. I really think she looks cute in this style, but it is so different, is it coming back into style?