Hi. I’m really excited to finally sew this dress of a pattern that I drafted. this pattern is a bustier dres with bust cups. I really want to add support to the bra cups, similar to that of a bra. I know that in order to do that I must use underwire, the only problem is that I do not want to buy underwire because I can only get it online (and quite frankly, the shipping and handling would be WAYYY more expensire then the underwire itself!) I was wondering if regular boning in a casing would work as underwire? Since I have to add boning anyway to the sides of my bustier.