A TRESemmé hairspray called Groundbreaking hit shelves this month. The word is a Miranda Priestly line from the 2006 film; the can is The Devil Wears Prada 2’s marketing anchor. The sequel is the first mass-release film whose brand partners operate as collaborators inside its fiction. Disney handed them a costume-and-campaign brief to write the world the movie already inhabits.

Lancôme is the signature skincare partner. TRESemmé signed on for hair, with the Groundbreaking can and two companions named Runway Ready and That’s All. The L’Oréal Paris Oscars spot, produced by Maximum Effort, dropped Simone Ashley in character as Amari (her actual role in the sequel) into a fictional Runway bullpen beside Kendall Jenner. Diet Coke shot a bespoke commercial set inside the same Runway offices, extending Coca-Cola’s 1942 Disney relationship into what Coca-Cola’s Stacy Jackson told Variety was “real and earned, and not engineered.”

The campaign reads like the film’s next page.

Fashion-film history offers a thin precedent. Givenchy dressed Audrey Hepburn in 1957’s Funny Face, where she played a bookshop assistant turned model for the magazine Quality, and Givenchy and the film were inseparable by design. That was one house and one muse. What Disney has done is industrialise the move: a coordinated roster of brands, a shared script of catchphrases, and a studio-approved permission slip to write ad copy using the screenplay’s lines.

The brief, read through the campaigns, is legible. Adopt the film’s vocabulary. Set your spot inside Runway or a surface next to it. Let the film’s characters appear alongside the real-life ambassadors. TRESemmé’s campaign runs in more than 40 markets, and L’Oréal’s tagline, “You’re Worth It. That’s All,” staples the house line to Miranda’s catchphrase.

The accessibility tier is the other shift. The original film’s wardrobe belonged to luxury houses; the sequel’s partner roster includes Walmart’s Scoop capsule (a $16 to $54 drop launching today), Tweezerman, and Grey Goose. The luxury names still appear on screen, but the revenue layer sits below them, in the tiers where volume lives.

The question for fashion marketers is whether the model transfers. Barbie (2023) had the pink monopoly; Wicked had two colours and a literary estate; neither handed brands a running vocabulary. The Devil Wears Prada 2 offers something thinner and more replicable: a fictional magazine, a shared vernacular, and a costume logic any label with shelf space can align with without buying a scene.

The precedent, once set, is cheap to copy. Expect next year’s slate to arrive with a costume-and-campaign brief attached — any film with an office, a runway, or a magazine in its world. Fluency in the film’s voice is the price of entry.