Can an Actor’s Fashion Contract Influence the Costumes in Their Films?

In “Spencer,” Kristen Stewart makes her first transformative appearance as Princess Diana by driving unaccompanied to a Royal Family Christmas at Sandringham. The top of her Porsche Carrera is down, the cold wind is whipping through her hair. She dons her oversized wayfarer-style sunglasses — and amid her feathered blonde waves, you get a glimpse of a dainty gold double-C logo: Chanel.

Lost, Diana pulls over to a roadside café. She exits the car in an aristocratic wool and velvet plaid blazer and pencil skirt custom-made by two-time Oscar-winning costume designer Jacqueline Durran, and grabs her quilted flap bag — by Chanel.