Emma Watson’s Lancôme Trésor Midnight Rose Campaign - Sneak Peek

Everything little thing she does is magic!

The final Harry Potter film may be in the can, but Emma Watson is as bewitching as ever in her upcoming fragrance campaign for Lancôme's Trésor Midnight Rose.

A behind-the-scenes video preview of the ad sees the pixie-haired actress making nice with French actor Cyril Descours (apparently Ron Weasley had a scheduling conflict) in romantic Parisian locales like a moonlit street and a bookshop.

"I was incredibly flattered to be asked to be an ambassadoress," says the British beauty, seen wearing a pink dress and a sassy fedora in various shots. "I think Lancôme has so much class and style and history and integrity. I just think it represents some really amazing women but it also manages to remain very relevant and current and modern."

The recent Harper's Bazaar U.K. cover star is equally enthusiastic about the scent itself, which casts an exotic purple glow.

"The fragrance is very wholesome in some way," she says. "It's very sweet and warm and playful. There's something magic about midnight and the concept of a flower that blooms at this time ... I wanted there to be a sense of optimism and fun, and a sense of youthful energy and positivity."

Calling photographer Mario Testino—who shot her past Burberry campaigns—"someone that I trust implicitly," the former People Tree collaborator raves about the campaign's storyline, which is inspired by chance and the message that "life is just magical and full of surprises."

For some more than most, Hermione.

Meanwhile, take a peek at Diane Kruger's upcoming beauty campaign.