Trousers Must Match Your Jacket and Feature a Satin or Grosgrain Stripe Your black tie trousers must be made from the same fabric as your jacket
On the last point, no they are usually permissable, but I have been told by some people that they didnt feel so comfortable in it when everyone else was in straight black tie or that more open events encouraged them to explore it I think I fall in the latter category, classic black tie for a few select events where there is a fairly even spread of men and women
De la Haye and Tucker note the connection between sportswear and the more casual styles of the decade writing: The prevalence of urban sportswear in male dress can also be directly correlated to the increasingly informal approach to workplace clothing
People wore black to funerals and also in the aftermath. Of course, this would all change by the mid-1920s, when the colour would become a badge of liberation and modernization, redefining the way women dressed
Your outfit may be strictly all black, but on the eyes, try experimenting with colour to make them pop
If printing, I recommend printing twice and cutting out a separate front and back pattern piece