I disagree. Â I think pocket squares can be a great accessory, and need not be restricted to formal situations. Â I often wear them to the office (2-3 times per week) even when nothing important is going on, and frequently to more important engagements (big meetings, courtroom appearances). Â They look great to complement outfits that are somewhat dressier (i.e. spread collar, pinstripes), yet not truly formal. Â But I also wear them on less serious occasions, too- Â a pocket square looks great, for example, as a way to add flair to a khaki suit worn with or without a tie. Â For that matter, they can spruce up any suit worn without a tie (say, with a button-down shirt open at the neck, or perhaps a turtleneck). Â I think they also look great with a navy or black blazer, even when worn over jeans. Also, pocket squares can -and should- be varied as to materials (linen vs. silk) and colors (while white is probably most basic and useful, also try solid colors (like light blues), small patterns, and solid colors with trim (one of my favorites is a white with blue trimmed edges from Paul Stuart)). Â That can add a tremendous amount of variety and versatility to your use of them.