In 2010, Portman signed on with Dior and appeared in several of the company's advertising campaigns. In October 2012, Britain's Advertising Standards Authority banned a Dior advertisement that featured Portman wearing Dior mascara after a complaint from Dior's competitor, L'Oreal, saying that the advert "misleadingly exaggerated the likely effects of the product". The ASA ruled that "the ad was likely to mislead". Portman is the face of one of the company's fragrances, Miss Dior, inspired by Catherine Dior. She has starred in campaign videos for the fragrance, and promoted a new version of the fragrance, Rose N'Roses, in 2021.
In 2010, Portman signed on with Dior and appeared in several of the company's advertising campaigns. In October 2012 Britain's Advertising Standards Authority banned a Dior advertisement that featured Portman wearing Dior mascara after a complaint from Dior's competitor L'Oreal, saying that the advert "misleadingly exaggerated the likely effects of the product". The ASA ruled that "the ad was likely to mislead". Portman is the face of one of the company's fragrances, Miss Dior, inspired by Catherine Dior. She has starred in campaign videos for the fragrance, and promoted a new version of the fragrance, Rose N'Roses, in 2021.