A tuxedo (US, colloquially "tux ''), dinner jacket (UK, colloquially "'' DJ "), or dinner suit is a semi-formal evening suit distinguished primarily by satin or grosgrain facings on the jacket 's lapels and buttons and a similar stripe along the outseam of the trousers.
what is a dinner suit in the uk
a semi-formal evening suit distinguished primarily by satin or grosgrain facings on the jacket 's lapels and buttons and a similar stripe along the outseam of the trousers