It's called the Viscount Shift dress from Monsoon, it's 100% silk and priced at £135 (rather hefty but I reckon I could make this dress last the distance). I have a few Monsoon dresses and they really are worth the money and the colour range is just brilliant. Being someone who likes bright colours, this is ideal for me. I bought a silk cerise minidress with a heavily beaded neckline from the Originals collection from there about 3 years ago and I still wear it now, still adore it and thankfully, it will never go out of fashion.
I have the perfect shoes sitting in my wardbrobe to go with this dress that are yet to be worn (that seems to happen alot...). I have been waiting to pair them with something special and I think this dress could be just the ticket! I reckon you could toughen the look up by adding a cropped leather jacket or even wear it with leggings as it's quite short. I even have the perfect makeup look to go with it...I'm so weak...