What are the characteristics of a Square shaped face?

If your face has angular lines with an equally wide forehead, cheekbones and jaw, your face might be square shaped.

From face on, a square face should have the curves of your face sides and the jaw and forehead line up to form an imaginary square. A rectangular face shape is very similar to a square shape, but longer. 

Celebrities with Square shaped faces include Angelina Jolie, Lucy Liu, Sandra Bullock, Paris Hilton, and Brad Pitt.

What eyeglasses and sunglasses features look best with a square or rectangular face shape?

Look for a frame with curves if you want to offset the more angular lines of your face. A thinner frame will be less overwhelming, alternatively, you could bring the attention away from your face's angles and to the frame with bright colors.