Kristen Stewart channels sexy and sultry in the newest Balenciaga Rosabotanica commercial, stripping almost completely down in her third year as the famous brand's model.

In the behind-the-scenes clip of the Balenciaga photoshoot, the "Twilight" actress and spokesperson for the fashion brand broke into happy grins on set while enjoying the shoot for the risque ad.

Rosabotania is the second perfume in Balenciaga's collection and the 23-year-old actress remarks that his fragrance is more "lived-in" than the first, Florabotanica.

"It's very much in keeping with the story," the actress said in the BTS video. "In the first one, it was very fresh. It was really clean and very bare in your face. In this, it's a little more lived in. It's like she knows the environment so well that when the lens steps in to take a look at her, it's like, 'I've been here in my world for so long, now who's looking at me?'"

In the video, the 23-year-old posed calmly and naturally, seemingly unmindful of her audience as directed sultry glances towards the camera. Stewart looked happy and excited between shoots as she prepared for the risque campaign.

During her shoot, the "Snow White and the Huntsman" star was decorated with colorful flowers and vines coiling around her bare chest, arms and along her back gracefully.

"It looks like the vines are starting to grow into her and they're becoming a part of her," Kristen Stewart commented regarding her character for the photoshoot. "She's clearly very comfortable there and owning it a little bit more."

In the second part of the photoshoot, Stewart is clad in a sexy cleavage-baring, low-cut silk black dress as she shoots the camera a playful smile.

"What I like about this is that I didn't have to turn into a different person," the 23-year-old remarked when asked about her thoughts on working with Balenciaga. "The point was to capture something natural. If you ever feel like you're forcing something or trying to get the shot, suddenly it's just not fun anymore."