In every formal occassion like wedding, company party, and other events that requires guests to be in formal attire, a tuxedo will always come in our mind because it is the most appropriate one.   It is also suitable in every busines meeting that one will have especially if it is going to be a million dollar deal.  One has to impress the client so that the deal will be done.  How you present yourself using the right attire is always admirable.