Continuity mistake: After the plane has landed in the stadium and Superman is checking if the passengers are all okay, note the speaker's glasses. They alternate between being very crooked to being perfectly straight. (00:41:15)
Superman Returns (2006)
41 mistakes
Directed by: Bryan Singer
Starring: Kevin Spacey, James Marsden, Kate Bosworth, Brandon Routh
Lex Luthor: Gods are selfish beings who fly around in little red capes and don't share their power with mankind.
Trivia: The two writers of the movie make a cameo appearance as the two teens in the museum who are told it's time to leave and they are a bit "man-handled."
More questions & answers from Superman Returns
Answer: There are two stories: a) the suit was made by Martha Kent from the blankets which came with Superman when he was a child and these blankets got superstrenght from the sun too. b) Superman generates an aura which protects him and his suit against such forces. Both stories can be true: either the suit itself is weakend by the kryptonite or Superman's aura was weakend by it. Currently it is said that the blanket-story is the correct one. Also, they don't actually cut it off him - it appears to open along a predefined line (coupled with someone exclaiming "got it!"), presumably the method Superman uses to get into the suit himself.
Bjoern_Buller