Oscars: How A-list stars choose their red carpet dresses

The image projected by actors as they take their turn on the red carpet in an array of glittering gowns is one of effortless chic. But for their stylists, awards season is a fashion endurance marathon that kicks off in August with the Venice Film Festival and ends with the Academy Awards in February, with hundreds of premieres, parties and panel discussions sprinkled in between, and never an outfit repeated.