From Laughing Moon Mercantile:
Misses' Corset Cover - The Corset Cover has four darts, front and back, and a square neck. It buttons down the front and can be made with or without sleeves.
Petticoat in Three Lengths - 1870 to early 1900's petticoat has no darts in the front and back yokes, seams at side front, sides, side back, center back and gathered back panels. Back opening has placket with buttons. There are three different length options: Walking skirt (ankle length), short train length (6 inches longer in back), and long train length (12 inches longer in back). The petticoat is designed to fit under Pattern #101 Five Gore Skirt.
Bustle - 1886 bustle is stuffed and has no wires. There are three main pieces: Under stay, support pad, and outer channels. It has a waistband and ties to secure it around the hips. The support pad can be made up alone and used as a small bustle. The shape of the bustle can be used for the periods 1870-1876 and again 1883-1887. The bustle comes in four sizes, S, M, L, and XL. The bustle is not meant to be worn under Pattern #101 Five Gore Skirt.