Read More... Chloe Sevigny, Greta Gerwig (Credit: Reuters/Regis Duvignau/Hannibal Hanschke/Photo montage by Salon) What charms grant the power to channel a zeitgeist? What talismanic guise gifts girl with “It” in the sway of her wrist or tilt of her head? “Unselfconsciousness, and self-confidence,” asserted author Elinor Glyn in 1926 for a story in Cosmopolitan.