No Shirt, No Problem?

My little one and I ate at Cracker Barrel yesterday in Calvert City. We both had chicken and dumplins. This is a treat for us since we usually eat at home. As we were finishing our meal, a couple arose from a nearby table and made their way toward our table on their way to the exit. Many restaurant patrons were staring at the couple and I suddenly sensed that the exiting couple were of some elevated status. As they drew nearer to our table, I recognized the man as being country music singer Marty Stewart. He was dressed in faded bib overalls and a black velvet sequin and rhinestone blazer, no shirt. His companion, a peroxide blonde female, whom I was later told was his wife, was completely dressed..including her shirt. Mr. Stewart politely addressed the dining room patrons in his soft baritone voice bidding all a good night then thanked the serving staff. What I found so interesting about this experience was the fact that this "celebrity" wore no shirt into Cracker Barrel. Is this a new country music style of which I am unaware? Is this appropriate dinner attire? Do good manners make up for poor fashion sense? I'm just wondering... I googled images of Marty Stewart and in every image I viewed (about 200 of the 159,000), he was wearing a shirt. I know Kentucky has a reputation as being hillbilly country, but please, for goodness sakes, when visiting Cracker Barrel, wear a shirt. Keep life beautiful!