I love this textured sweater cape:
This elegant version is a nice option for wearing to work:
Obviously, Olivia Palermo gets the casual version just right. (On a side note, who exactly is she? All I know is that she's super stylish, but what is she actually famous for?)
This is the cape that I have. It's from Ann Taylor, only mine is solid brown whereas hers is colorblocked. I usually pair mine with slim pants or jeans and boots, rather than a skirt.