Dress-shirted

And, sure enough, against an almost entirely low-necked, hatless, dress-shirted audience, I saw three ladies proudly wearing green hats “pour le sport,” and seemingly with no attempt to be funny.

Source: wiktionary

And such was the never-failing efficiency of this masterly girl that it whizzed in through the open window, from which, after a brief interval, there appeared, leaning out, the dress-shirted and white-tied upper portion of Mr. Willoughby Braddock.

Source: wiktionary

The low-key waitstaff is dress-shirted in French blue.

Source: wiktionary