I adore this look. Cut the sleeves off a sand coloured business shirt (this one might be leather but thats a bit hard to DIY), replace with grey marl sleeves from a tee or sweater. Pair with a full black skirt - I have a gorgeous wool one from Rome that I adore that would go perfectly with this look. Oh, by the way, if you get sick of your full Betty Draper style midi skirts, cute them into mini skirts like this.
Image: Zimmerman via Harper and Harley
By the way, I have soooo much DIY inspiration stored up, but I hate to bombard you with posts, do you think less is more?