All I can say is wow I love this look:
* Thigh high socks make her legs look super long and lean because they cut right above her knee and show some skin. The dark shade works to create a more slender leg. The fact that the sock goes over her knee tricks the eye into thinking her lewer leg is longer than it really is.
*The short dress reveals a perect amount of skin but creates a long and lean torso. Again this creates the image of height because their is no horizontal break at her waist.
* I also applaud the long grandpa cardigan that is longer than the top of the socks. She looks casual and sexy but in a very subtle way.
* To finish her look she topped it off with a long printed scarf that continues with the legthening theme of no horizontal breaks. As an added bonus she stayed working in a monocromatic pallette.