Elegance isn't solely defined by what you wear. It's how you carry yourself, how you speak, what you read.
Elegance is not a dispensable luxury but a factor that decides between success and failure.
Many of the familiar little things that we use every day have typically evolved over a period of time to a state of familiarity. They balance form and function, elegance and economy, success and failure in ways that are not only acceptable, but also admirable.
It's unarguable that the right shoes can really add elegance to an outfit and to the person who's wearing them. Take a pair of high heels, for instance. Suddenly, you're looking taller, shoulders back, body curved.
What is it indeed that gives us the feeling of elegance in a solution, in a demonstration?