Ensemble dresses were not just present in the 1890s- here’s an example from circa 1877 by Worth:
The view above reflects the cuirass bodice style that was coming into vogue during the late 1870s and the lines are well-sculpted and clean with a minimum of trim. This bodice was intended more for wear at daytime functions while the bodice below was meant for evening functions:
Here’s a close up of the day bodice. The edges of the bodice front openings and sleeve cuffs are trimmed with the same fabric that the underskirt is made from, combined with lace trim.
Although we don’t have a side profile picture, it does appear that the silhouette is a bit more slimmed down and with the cuirass bodice, the wouldn’t be much room for a full bustle. Stay tuned for more on ensemble dresses…