From Petite Stitchery:
The Rory Dress and Peplum is a sassy and fun dress and top with a turtleneck, perfect for all seasons with the option of long-sleeves, elbow sleeves, or sleeveless. Intended for structured knits such as liverpool, ponte, and cotton lycra; this pattern can also be used with a variety of knits including brushed poly and even some sweater knits!