Tuxedos may be worn with an appropriate hat. This may be a bowler's hat or a top hat, among others.
Only if he wants to. USually, the father does wear a tuxedo.
That depends on what the hosts consider "formal". I would suggest white tie, and a tuxedo with tails. Top hat optional.
A tuxedo IS the jacket. If you wear tails, wear a vest underneath, a real tie or cravat ,and cufflinks with French-cuffed shirts.
Tuxedo
underware
no
The correct spelling is tuxedo (formal wear, abbreviated tux)
i will wear the hat!
A Tuxedo.
Evening Gowns and Tuxedo.
tuxedo's of course