Here is a picture I made about a clothing mannequin. It's probably the life cast of a real woman's face. They didn't chose this model randomly. They chose it because of it's beauty and elegance.
Notice the projecting cheekbones, broad and strong jaw, how blocky and strong is the jaw box looking.
It's no surprise why a well developed, healthy jaw mechanism is essential to beauty: by taking almost 2/3 of face, most of the head is a pressure chewing machine. Facial beauty can't be dissociated from the jaw box: the jaw box is the face: a nice jaw box can forgive an ugly nose.
Sorry for the poor quality of the pictures: it was taken with a mobile phone on a fashion store display window.
Square jawed people are rare. Beautiful square jawed people are even rarer.
and this : http://www.youtube.com/watch?v=h1qatiufQgI
***Admin edit: Excellent find, I didn't knew her. Congratulations to whoever you are "Unregistered user". I edited this post and added more pictures. This is an extremely beautiful woman, with of course, an above average squareness of the jaw. I can fall in love in a heart beat. When seeing such a creature you think for a moment that there is nothing more important in this world than woman beauty.***


Here is another model with super sharp face structures. This face transpire health and harmonious bone growth. Chin is pointy, and protrude forward in exquisite way. Jaw plane is well visible and very flat.
Look at this square jaw box, flat jaw line !! Just as sexy for us square jaw admirers as the nice pair of breast just below:Good news: the square jaw holy grail was found. Let me introduce you to Ana, a visitor of this site, now member of the very select "Wlj beauties" club.
Not only is Ana beautiful, feminine and healthy looking.... she also happen to have the rare, perfect, 90 degrees jaw. It's the holy grail of the square jaw world, "the perfect square jaw", which will be proved and documented in this post. Ready ?
(PS: thanks Ana for sharing pictures and documentation)
Not striking at first glance, the square jaw specialist can still guess from this picture, the square jawed structure. Impossible to deny that this face is typically feminine: eyes, skin, lips and skull shape. Notice the lustrous hairs: