Once I traced my BRT onto paper, I put my underwire on top of my tracing. Lo and behold:
I was happy to find that the underwires I chose empirically (and ordered online) were an excellent match to my BRT. It's a tad hard to see, but the white underwire is sitting on top of the black marker tracing.
That's it for today. Tomorrow I plan to trace off my pattern and possibly start a muslin, while I await my bra fabrics to arrive in the mail from Canada.
See you soon with more bra talk!