I really like the idea of hard and soft with this: biker jacket and boots with the dress. I also like the look of a nature-loving girl: brown booties with a soft brown jacket. Do the flower child look by adding a feminine headband with beachy waves in your hair.
Just don't wear it with a blue belt or people will be singing "girls in white dresses with blue satin sashes."
Jigsaw dress - $135
Dorothy Perkins dress - $44
Dorothy Perkins dress - $25
Allyfashion.com - $40