Superman easily reigns as the box office champion for the second weekend in a row, and James Gunn’s opus made an estimated $57.3 million domestically in its sophomore stanza. Unfortunately for newcomers I Know What You Did Last Summer and Smurfs,

Warner Bros.’ 'Superman' held the No. 1 position at the U.K. and Ireland box office for a second weekend, adding $6.5 million.

SUPERMAN rules the box office and brings DC Studios and Warner Bros. along for the ride. The comic book movie’s box