On the set of one of the Pirates of the Carribbean films, Johnny Depp spent £40,000 on 500 coats for the cast and crew.
Pierce Brosnan was contractually forbidden from wearing a full tuxedo in any non-James Bond movie from 1995-2002.
During the filming of Star Trek (2009), Zachary Quinto could not manage to properly do the Vulcan salute. Eventually, J.J. Abrams had to glue his fingers together in order for Quinto to do it correctly.
For 'Deadpool' (2016) Ryan Reynolds paid $10,000 of his own money for the right to wear a shirt with The Golden Girl’s Bea Arthur on it.