It’s unlikely that a man who took so much pride in what he wore would have deigned to be seen in such an unremarkable suit, said Alexis Coe, a political historian and author of “You Never Forget Your First: A Biography of George of Washington.” “He was quite fancy,” she said. “I don’t think he would look as slick as Mitt Romney, but you would be able to recognize that it was well tailored. If he couldn’t wear Prada, he would probably have it custom made.” Dean Malissa, who has been described as the “world’s greatest George Washington impersonator,” agreed that the first president “was a bit of a fashion plate.” He also tended to dress more formally than his peers. “When men of his day took their coats off when it was blistering hot, he kept his on,” said Mr. Malissa, a longtime portrayer of Washington at Mount Vernon.