Fans of the beloved series "Happy Days," which aired from 1974 to 1984, got a treat this weekend when some of the cast members came together at Steel City Con.

A COSTUME CONTEST WILL END THE DAY ON SUNDAY ... including "Laverne & Shirley" and "Mork & Mindy." Sunday, Monday, happy days. Fans of the beloved series "Happy Days," which aired from 1974 ...