Black and white is such an overwhelmingly strong trend for the winter that is is definitely important to keep up to speed with how they are already wearing it in the northern hemisphere. My favourite so far is Olivia Wilde (again) in black skinny jeans, a blazer and a print shirt. I can't imagine that anyone of us would get this wrong. It's so simple and accessible. Nicole Richie jazzes her fifth b&w look in a row up with zips and cool uneven hems and I love her a little more every time. Stunning. And that Jessica Alba sure knows how to do a sleek and sophisticated version. If you dare to wear a white poloneck. Somehow she manages to make it look sensational. Tally ho! Black and white ahoy.