The left garment is described as, "British bustle crinoline made of wool, cotton, and steel." It is from From pinterest.com/vintagealex/corsets. The tight image is from fripperiesandfobs.tumblr.com.
This shows what underlays bustles going from diminutive in 1882 to aggressive in 1885. The 1885 bustle has a collapsable frame for sitting.
Keywords: 1882, 1885, British, bustle