I cannot overstate what a deal this dress is.  It's well made, very flattering, comfortable and also easy to care for.  I bought this dress when I was 10 lbs. heavier; it looked great on then, and it still looks great now.  I'm 5'5", 125 lbs, 34C and bought a M.
This dress hugs your figure without worry of panty lines or transparency.  You can move freely in it, even though it looks stylized and rigid, because the fabric does have a light elastic give.  I wash it in the washing machine, and have to run a steamer over it after the dryer, but it comes back to life perfectly every time.
The bird design is unique and very wearable.  I own the black polka-dot dress as well, and will be buying another.  This dress is a home run.