Gwyneth Paltrow and Robert Downey Jr. have very different ways of acting. After the two Hollywood icons worked together in three Iron Man films, the Goop founder, 51, admitted being on set with the newly minted Oscar winner, 59, became been difficult at times. According to Paltrow, who played Pepper Potts, Downey Jr., who portrayed Tony Stark, would omit lines of dialogue from the script and make up new ones right before cameras rolled. Eventually, the blonde beauty stopped learning her lines altogether since she felt it became a waste of time. “There would be this process of [director] Jon Fa…
