This is a great spring outfit and the skirt will travel through the summer:
This is the Lafayette 148 Helena Eyelet Embroidered Midi Skirt and Striped Loose-Knit Saddle-Shoulder Sweater. Price tag: Skirt - $1998.00 and Sweater - $798.00. Details: Skirt - A-line silhouette, below the knee, tonal eyelet embroidery, linen; Top - 27" long, crew neck, long sleeves, relaxed fit, pullover style.
Really, the skirt is about the fabric. It looks to me like it is a patchwork fabric in the close-up pictures at Neiman Marcus but you never know what kind of fabric that designers can source. As far as the top, if you can knit you can probably duplicate this sweater fairly easily. However, the inspiration is really the stripes here and we can get striped fabric. Just use your fabric t-shirt style pattern and have fun. As for the skirt, this skirt will give you the correct silhouette: