Be-tuxed

But before the mob could spring into action, the be-tuxed youth, at once aware of his danger, took flight.

Source: wiktionary

He had reached the center of the impressive lobby—“the place where your real dignity shows,” as he puts it—when he felt a violent clump on the back, heard a voice say: “Why, hello, Joey.” The words were not spoken by Mr. Asterbilt or any of the few be-jewelled and be-tuxed guests passing through the lobby at the late hour; they came from a bell boy.

Source: wiktionary

Even so, it was easy to feel underdressed as we ambled to L’Orientale dining car through rows of be-gowned and be-tuxed swells.

Source: wiktionary