Now there's how to combine wrapping up with looking stylish!
Sienna Miller donned this lovely Christmassy outfit yesterday to unveil the London Eye lit up red for World Aids Day.
Ok so those heeled knee-high boots wouldn't be the most practical for navigating the current snowy environs, but if you substituted them with a sturdy flat-soled version you'd be laughing.
I love her faux fur cropped jacket, which are great for keeping out the winter chill. Skinny black jeans keep the silhouette from looking bulky, while flashes of colour are provided with red and black striped fingerless gloves and scarlet lipstick.
Cosy and chic, what more can you ask for!