I have been wearing Anita Nursing Bras for 4 years and this is by-far the oddest size problem I have ever had with Anita.
I am a 36F and this bra was too big in the band and also the cup.
I am not certain if a small band or cup size would work so I am just returning for the Anita 5035 (which ALWAYS fits).
I love Anita nursing bras and have always been satisfied.  I wish this one would have fit as I really liked the seamless cup and the soft fabric.