What you focus on expands…
All this talk of cat-eye sunglasses and I log in to online news and see a link to this pic of Scarlet Johansson rocking some awesome cat eye sunglasses. Her outfit appears to be vintage so the glasses may be as well. However there are a number of current eyewear designers revisiting the cat eye look if you want to recreate this.
For more on the circumstances of this photo visit my original source;
http://www.fabsugar.com/Scarlett-Johansson-Wearing-Cat-Eye-Sunglasses-Outside-David-Letterman-2010-7468442