You'll have to go to the bottom of the page -The Sartorialist - to find the post and see the other pic of this lady. I'm not too sure about the outfit in the other picture he has of this same woman - to me that one is struggling.
But this one is dead on - very casual, yet quite stylish as well. I love the brown coat and the handbag really centers the outfit -- it reminds me of this one over at Forzieri:
More importantly, in both pictures, is this lady's manner -- she's comfortable in her own skin and it shows. That confidence makes the outfit - she isn't second guessing or doubting herself.
THAT'S the way to walk through the world - and if you do, you'll make just about any outfit work!