Just bought several of these tanks for hot days at work. They look cute and still professional--form-fitting enough to show some figure, but not skin-tight and inappropriate. I've owned one for a month or two now and it has held up well with washing--seems to be quality fabric. I often wear size 4-6 tops (28 or 30DDD bras), and the medium fits me best.
This tank is great for wearing alone or under tops for a smoothing effect ;-). I love it, because it is not a see-through material as is the case for most white tanks. I purchased three different colors. As always, Nic +Zoe uses excellent materials and craftsmanship.