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Busy character actor Sam Hardy was afforded a rare starring role when he played the title character in High Hat. Despite his ritzy nickname, High Hat is a mere movie dress extra at First National Pictures (where the film was shot). Even so, he regards himself as the studio pundit, dispensing romantic and financial advice to such stars as John Barrymore and Pola Negri. The plot proper has something to do with a studio seamstress named Millie (Mary Brian), who after losing a string of pearls entrusted in her care vows to work overtime until she can make up their cost. High Hat comes to the girl's rescue, recovers the diamonds, and returns to his full-time "job" as First National's resident sage.