Here is the dress in its natural state:
I realize that the picture doesn't really give the details, but it's pretty plain and simple. Gathered waist and a button-up top with cap-sleeves and a simple collar.
Here is the dress with my additions:
The belt is a white polka dot on a black background. Just scraps I had left over from a dress I made for my sweet Junebug.
I love this fabric pin that I found on Wise Craft. What a quick and satisfying craft!
Here's a close up of the pin:
I hope you give thrift stores a fair chance, too. One woman's trash is another woman's fabulous Sunday dress!