Okay, I'm going to keep it real here because I couldn't find any of the actual items I own, so these are the closest I could find on Polyvore, or anywhere online, actually.
The main piece here is the cardigan. Mine is a shade lighter (I was inspired after seeing this post from Kevin and Amanda) and it's as comfy as a hoodie but dressier. It is so comfy and the moment I put it on I want to make some tea and watch Gosford Park.
I am lucky that both my sister and my mom love to knit and crochet, so I have hats and scarves galore. With this light plum cardie I like to wear a dark pink t-shirt, with black and gray accessories.
Easy peasy, comfy enough for errands but stylish enough for, uh, the red carpet. Hmmm, maybe not. But stylish enough that I don't want to hide when doing the school run :D