It's inappropriate to dress poorly when you represent a business.
Jacob was getting dressed to meet with a client for lunch one day.
Jacob wants to put a shirt on.
Jacob grabs his best button down shirt that he finds in his closet.
Jacob grabs a tee shirt with a band name on it to go to his meeting.
The client is impressed with the way that Jacob looks and sends him more business.
The client isn't impressed with the way that Jacob looks and Jacob loses his business.