Hilary Duff does do Smokey eyes well! She is also combining Smokey with a slight cat eye. She takes the darker shade and extends it past her outer eye in an upward "cat" eye motion. It's not as severe as normal "cat" eyes because she softens the look with a medium shade along the middle and a light shade along the upper eyelid just below the eyebrow. She also has a matching shade of eyeliner along the upper eye and also along the lower eye. She blends this color by using her medium eye shadow over her lower eyeliner. The only way she can do this is to use the proper brushes for application. You won't get a good Smokey or even a good "cat" eye with the applicator that comes in your eye shadow compact. You will need to invest in two brushes for this look.

You will need: Chisel Angle Fluff Brush - For all over color and under eye brow Chisel Double Shader Brush - For contouring and blending - A trio eye shadow or three shades of color:
light, medium, dark preferably in a Smokey hue like: Bren Cosmetics Eye
Shadow Trio Eclipse Grapevine Amor