Aimee of Song of Style blog, after Diesel Black Gold (I think!), NYC, September 2012.
A gorgeous way to beat the heat in NYC.  
Such an great tunic dress... I could see this working with cute flat sandals as well.
I am not sure who designed the dress, but I am sure if you asked Aimee she would let you know!
Recreate Aimee's look (kind of):
Helmut Helmut Lang slouchy tunic dress,  Tucker V Neck tunic dress with pockets, Richard Nicoll cotton-blend shift dress, Zero + Maria Cornejo Koya tunic dress, Tibi heavy silk tunic dress, Victoria, Victoria Beckham mini dress, Dolce Vita Tessie sequin dress  or Zero + Maria Cornejo Tomo tunic dress
Rag & Bone Moto wrap bracelet, Tory Burch double wrap bracelet, Marc by Marc Jacobs wrap bracelet, or McQ Alexander McQueen razor wrap bracelet