So! I'm looking for a waist cincher for wearing under a costume I'm working on, so as to accentuate my waist. I would be wearing it for extended periods of time under fitted (but not skintight) clothing. I'm not concerned about color or appearance because it won't be visible, and even a corset could work for this as long as there aren't ruffles (as those could throw off the flow of the fabric). Attached garters are fine as I can always remove them myself. I found some that I think could work, but I'd appreciate some input from people who are more experienced with these things.

To summarize: I'm looking for a corset or waist cincher to accentuate my waist when worn under clothing, with decent body-shaping ability and no big ruffles or bows that could show through.