5'9", size 16, 38DD and these One Size bralettes fit perfectly.  Perhaps other reviewers didn't try this on - I'm NOT a small woman and I find that this bralette is equivalent to Maidenform's discontinued Fit-To-Flirt t-back bralettes.  I wore mine during the day as a regular bra and then through a yoga class - perfect!  I couldn't be happier with this garment.  Five stars!