Emmy Rossum is such a cutie patootie and I love her turquoise and blue outfit. The purse is what sealed the deal though, and inspired me to put something similar together from my closet. My hues are not an exact match, but it's an example of how you can re-create something you like without using the exact same pieces. Try colorblocking blue tones in your closet with a black and white pattern of any kind - purse (options below), shoes, or even a shirt or scarf!
Top: MJR Sales c/o (similar, similar)
Skirt: Limited, $35 (similar, full, maxi)
Purse: Sole Society c/o - similar below
Shoes: Sole Society c/o (similar, similar)
Earrings: My Stella & Dot, $19
Approx. dates: Top is 3 years ago. Skirt is 2 years ago. Purse and shoes are 1 year ago.