Sarah's Dress from 2.010

The multi-colored dress Sarah wears in episode 17 (Arbitrary Love, 2.010) appears to have been created by Adrienne Vittadini. 

The purple skirt of her dress is visible in the frame above. 

Sadly, because she is seated throughout the entirety of the opening scene and during Leland's repass, better or more varied images cannot be provided. I believe the color difference may be due to the series' use of color filters. 

Note the two front pockets at the hips. 

The dress has a zipper closure. 

Fabric detail.

The dress is a heavy wool material and features large shoulder pads. 

The shoulder pads of the dress can be seen in the image below.