The sharp-cut tailored jacket that was once relegated to the office has become a forever piece, an investment piece, a non-negotiable wardrobe staple. Now spring is in sight, an oversized blazer is the perfect transitional piece. A good blazer is a fashion chameleon and will work with everything from jeans and a blouse to a dress and sweater. However you are planning to wear yours, a well-cut blazer in the best fabric you can afford is a great investment be it wool, linen, single- or double-breasted. Here’s our edit of the best online now …