"My rib measurement is 26 inches, and not even Bravissimo sells that band size. What's your advice?"
I have a couple of suggestions for you:
* Eva Michalak´s Very Tight Bands
There is Polish producer that produces bras with very very tight bands. The site is ewa-michalak.pl and they start with band size 60, which is so sung that it´s actually meant for girls with 58-62cm (22-24") under the bust. The bras are very good quality and are very pretty,The site has it´s own calculator (with a slightly different system), and according to it you´d find their band 65 a good fit. I don´t know your bust size, so you need to try their calculator yourself.
"obwód pod biustem mierzony ciasno" means "under the bust, measured tightly"
"obwód pod biustem mierzony luźno" means "under the bust, measured loosely"
"obwód w biuście mierzony w pozycji pochylonej bez stanika" means measurement in the bust, leaning forward, bra-less.
The site is in Polish, but they do shipping all over Europe for ca. 5€ and worldwide for ca. 6€ (which is ridiculously cheap) so I´m guessing they do business internationally. I´d suggest mailing them at sklep@ewa-michalak.pl in english, giving her your measurements and the bras you like.The bras start at 70 zł (PLN) which is 17€. They offer free shipping if you want to exchange the item for another). They also accept Paypal. All of this makes it a hassle-free and very affordable solution.