Reply To: Lubavitch Hats

about untucked shirts:
maybe maybe it comes from many older chasidim that had and have their talis koton untucked. beacause according to the alter rebbe the shiur required for a talis koton should be spread out and not folded or creased. thats why chabad wears a bendel on the talis koton to keep the talis koton spread out all day, but many of the older generation had their talis koton out for that reason so they can always make sure its spread out. so if their talis koton was out so obviously their shirt had to be out too.