Maisie Williams revealed the mentally and physically ... Dior’s younger sister in “The New Look.” Dave Benett/Getty Images for EE “I had to be up at 4 a.m. to start sweating.

Maisie Williams explained how she lost 25 pounds to turn into an emaciated Catherine Dior for the French Resistance series, "A New Look." Williams, 26, detailed the process in a new interview.