Helen Mirren and Alden Ehrenreich's favorite Halloween looks

Helen Mirren as Catherine the Great and Alden Ehrenreich as Hobie Doyle for Halloween?! Their stylists NEED to have them reprise their costumes immediately! Talking to us at the premiere of their new film 'A Talent for Murder,' Mirren and Ehrenreich revealed which iconic character of theirs would they like to dress up as for Halloween.