Eye-catching, colorful pocket squares are bursting out of the jacket pockets at Saks Fifth Avenue in Manhattan, each one adding a unique splash of personality to an ensemble. They are the work of Barbara Campbell, whose pocket-square collection was launched three years ago at Saks and numbers some 1,600 editions per year (from $75). And she still sews each one herself in her New Jersey apartment.
“I noticed that some of the guys on the sales floor were wearing these amazing pocket squares. When I asked where …