Read the reason why Dylan O’Brien had to use fake facial hair instead of his real mustache in the Saturday Night movie.

Shortly before Saturday Night hit theaters last October, O'Brien told EW that he had his doubts about his physical resemblance to the Ghostbusters actor — or any other original ...

O'Brien's Twinless mustache, however, was 100 percent real. "This was mine," he explained. When asked if he preferred sporting his own facial hair rather than a fake mustache, O'Brien admitted ...