What was Booth wearing?

[L Verge]

The answer as to whether or not Booth was wearing a tie has been hidden in plain sight, and those of us well-versed in the Lincoln assassination history should have known it from the start. One of the items removed from Booth's body was a tie pin. At the time it was found, it was holding together his undershirt; but we can be certain that the fastidious Mr. Booth would not have started his adventure in such a rag-tag manner.

That stick pin was inscribed to JWB from his friend and fellow actor, Dan Bryant, and had been a gift - one that the assassin had used to embellish his neck attire as he headed to Ford's Theatre that night. It also would indicate the style of tie that he wore. Pins were not required for bow ties.