This concept has been around for a few seasons now, but in looking for a pencil skirt with a knee split I had picked up Simplicity 2724 (check this version out). The new appeal of this dress now that I'm sewing again is actually sheer laziness on my part - a kind of dressing "2 for the price of 1 if you will". One dress + accessories and you're done.
Additionally, the flexibility inspired me. All kinds of fabrics are represented here: cotton, wool, silk, modal... and types of fabrics - shirting, jersey, brocade, chiffon... Consider the dynamic possibilities as you dress up, dress down, and accessorize and layer through the seasons. See - lazy glamor. Don't you love it? :)