[Tinkerbells]

I just found this:
http://www.thinandcurvy.com/2011/05/where-to-find-26-and-24-band-bras-and.html?m=1
Hope it helps

Ahhh! Oh my gosh, this is amazing! Thank you so much! Time to look at good fitting bras!

Glad I could be of service
I almost feel lucky knowing its impossible for me to ever need such a small band size xD

I know, it's so hard! Just look at the name 'Thin and curvy' - it's like a boob catch 22, I just contradict myself! Haha!