This is one of my older bras and it is definitely too large in the band and too small in the cup. The band is quite stretchy, as are the straps. The wires are of medium firmness. The cup is well constructed, lined and contains an inner side sling to center and support. The overall size is nice for a petite frame.
The cups on this bra run big for Calvin Klein anyways. The wires are wide, the cup is shallow and slightly stretchy. It gives a very rounded minimised shape. The band like all Calvin Klein runs small and fits more like a 28 back.
I've had this bra for over a year now. I'm on the middle hooks and still going strong. This bra fits great except for TOM when I have a bit of quad boob from it. I like this bra for being very comfortable and for being very forgiving in the cups with size changes. I don't care much for the minimised round profile it gives my boobs. However, this bra has its place and I will continue to wear it till it dies unless my boobs decide to grow another cup in a year in which case I will be too big for it no matter what.
Pictures are from when my boobs were about a cup smaller than they are now.