The Oscar-winning actress has reportedly signed a two-year contract with the French fashion house, estimated to be worth somewhere between $6 and $10 million.
Vuitton creative director Nicolas Ghesquière confirmed the appointment on Instagram today.
It was then followed by an announcement on the official Louis Vuitton account.
As a face of the brand, the 28-year-old actress will star in worldwide TV and print campaigns, as well as wear the brand's clothing on the red carpet.
And she's started already, having worn a Louis Vuitton jacket and shirt dress to the premiere of Battle of the Sexes in LA earlier this month.
Followed by a an embellished, ruffle-sleeve gown at the London premiere of the film.
According to Page Six, the LVMH-owned company had been pursuing the star for nearly a year. Rumor has it that the brand has also been chasing Stone's La La Land co-star, Ryan Gosling, for the past three years, but to no avail, as the actor reportedly doesn't do endorsement deals.
Stone joins a list of other A-list actresses to work with the house, including Michelle Williams, Sophie Turner and Alicia Vikander.