Most of the time, she will be wearing a work's shirt with large coveralls, so that won't be a problem, but it's the formal settings where she has to hide her hips and chest in finely-tailored suits in close quarters among highly-educated upper crust scientists. I know that there are difficulties hiding hips and breast, especially since this girl is during her "coming of age;" that is, changing body shape as she gets older. I have done some study on the flapper rage of the 1920s, which while that is post-Victorian, has some of the concepts I am looking at. In order for the flappers to look more "boyish," they usually employed a soft corset. But what other techniques might a young girl use to hide her feminine shape?
Is it possible to "train the body" to stay flat-chested? Kind of like Chinese foot binding, but with hips and chest? I was considering just an overall padding, like a "fat suit," which may be my backup. I want something realistic if I can, especially with Victorian-era technology, although given that this is steampunk, I have a little fictional flexibility.
I am not interested in HOW to make one as much as I need terms and possible examples of the period (think like 1870-1900 range). Also, any other problems a young girl might have in such a ruse. I have already covered the sanitary napkins issue, which I am keeping on the downlow because... TMI, right?