If you receive an invitation that says "White Tie", the women will be wearing long formal evening dresses and the gents will be wearing tailcoats, white pique wingtip formal shirts, a white pique waist coat (vest) & bow tie set, formal studs & cufflinks and patent leather shoes. More often that not, the shirt, vest & bow ties are all the same fabric - a pique textured cotton. For your jewelry set, a white mother of pearl inset with a silver or gold trim completes the look.