DEAR MISS MANNERS: I received an invitation to the wedding of a colleague’s child. Every piece of correspondence noted, “This is a black-tie affair. Please dress accordingly.” My husband finally borrowed a tuxedo from a friend, but not without multitudinous complaints about how pretentious it was and how uncomfortable he was in the tuxedo that I was “making him wear.” (Honestly, he is in his 60s; he’s not 9 years old.) We arrived at the wedding to find that not even the father of the bride was in black tie. He had a beautiful suit, but it was not a tuxedo. The groom and his best man wore regul…