It's a penguin suit affair. Tuxedos. Penguin suits!
Hell yeah
No, it is not advisable for a woman to wear a tuxedo to a black tie wedding because tuxedos are meant to be worn by men. She could wear a simple black cocktail dress and if she likes instead of jewelry she could wear a black bow tie around her neck.
A black tie. Assuming that the shoes will be black.
morning suits or black tie attire
You could ask why, but if the guest wears a 3-piece suit with a tie, it shouldn't be a problem.
* If it were a black tie wedding then it would be announced in the wedding invitation. Since you haven't done this leave it up to the individual guests as most of the men will wear different colored ties; some with sports jackets and slacks; suits or perhaps just slacks and a shirt with a tie. If you are having a very casual wedding then you could mention 'casual dress.' However, the first suggestion given is generally the best.
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If you are not in the wedding party and there is nothing mentioned about 'white ties' then no, you should not wear a white tie.
black bow tie
The best popular choice for a wedding suit is a formal black suit with a black tie. The popular choice for women is a long flowing white dress though couples may decide on different colors.
A Nice Dress, but typically avoid white and black, as white is the brides color and black is typically reserved for funerals and black tie events.
It depends on a occasion, if it's a formal meeting, wear a black tie - you'll appear serious. For wedding, this can also suit you, alternatively, a very good but sometimes risky idea is to wear a tie to match the brides dress, if you're the groom. If you're a wedding guest, wear a tie that will compliment your parterns dress.