Bar Mitzvah literally means 'son of the commandment'. One cannot 'have' a Bar Mitzvah; it is simply the term for the age at which a Jewish boy becomes becomes obligated to follow the commandments,...
A dress suit, dress shoes and tie with a skullcap and prayer shawl.A nice suit. Seriously, it depends on which service he is participating in. If it's a Saturday morning service, he wears a tallit...