After an interview in the studio, Brand and the show's hosts moved outside at Rockefeller Plaza to continue filming - and chivalrous Brand offered to warm up female fans watching the shoot.
He first hugged presenter Meredith Vieira after asking her, "Are you chilly, darling? Give us a cuddle", before approaching the stunned crowd and embracing them too.
Weather presenter Al Roker told viewers, "Russell Brand, warming up the crowd now, look at that! One audience member at a time."