On Monday, the actor made a rare public appearance at the Broadway premiere of “Glengarry Glen Ross,” where he showed off his shoulder-length brown hair. The “Divergent” star, 31, posed in a dark blue ...

Case in point? Michelle Monaghan, who had to dye her naturally brown hair for her role as TV star Jaclyn in season three of The White Lotus. "I'm a dark brunette. And I knew that Mike really ...