I could use some expert advice. I'm a beginner, looking for a waistcoat (which I think is called a vest in the USA). Next weekend my DP and I are giving a performance of two routines as part of a dance-school show. One of the dances is a Paso Doble: when I performed this before, I borrowed a waistcoat from a professional and I'd like to wear one again, but will I be OK in a non-dance-specific one? My concern is the amount of movement they allow and the possibility of it ending up round my ears. As I say I'm a beginner and I'll also be performing for a mostly non-ballroom audience, so the look is not a matter of life and death, but at the same time I'd rather not look like a sack of potatoes. Can I just buy a cheap one from the men's department or would I be better off going without than doing that? Advice appreciated.