<P> 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 . </P> <P> The suit is typically black or midnight blue and commonly worn with a formal shirt, shoes and other accessories, most traditionally in the form prescribed by the black tie dress code . </P>

What is a dinner suit in the uk