I looked carefully at reviews which said that 1) the tease ran small in the cup and 2) large in the band. I'm in between 30e/f and full on top. So I decided to go with the f cup, in my other purchase of this bra in a 30 band. But I also decided to get a 28ff in case the band ran big and stretched out quickly.
The cups: I think they do run small, but as this is a half cup and I'm in between sizes, it fits perfectly. There's nothing to cut in up top.
The band: I'm not sure if Curvy Kate has changed their fit, but the band runs true to a 28, I measure a tight 28 and a loose 30. So I had to buy an extender for this bra. Also, because the band is snug the cups feel a smidgen smaller than my 30f. But after a few days breaking it in its just right.
Funny note, one reviewer said it creaks. It does! Lol, just don't bend a bunch. Also, I like three hooks better than two, I feel like it'll stay in place even better.
Just a note, before I added the extender the band felt itchy. But with the extender it doesn't!
Updated on Nov 27, 2017