Kristen Stewart is starring in a new ad for Balenciaga's fragrance Florabotanica. The "Twilight" actress is completely nude in the photo except for a vine of colorful flowers draped over her back in one photo.

"Not that her lack of clothes could take away from the star's gorgeous look above the shoulders-she is the face of the perfume for a reason after all! Flaunting a wind-swept updo, smoky eye makeup and glossy lips Kristen has never looked more like a classic Hollywood movie star," said E! News.

E! News reported that Kristen Stewart's ex boyfriend, Robert Pattinson is also currently a spokesmodel for Dior Homme.

Last month the Twilight actress, Kristen Stewart screamed at papparazi yesterday in Los Angeles. The 23-year-old said, "You don't deserve to breathe the same air I do."

Stewart is shown hiding behind a gate in Los Angeles waiting for a  ride outside a building, in the video that TMZ released. It's unclear why Stewart screams at the papparazi.

When the paparazzi asks, "Why are you saying f**k off?" 

She responds,, "Because you're a piece of s**t and you don't deserve to breathe the same air I do."

Stewart and her costar from Twilight, Robert Pattison broke up after Stewart was caught cheating on him with her director of Snow White and the Huntsman, Rupert Sanders.

On July 17, 2012 in Los Angeles, the then 22-year-old actress was caught by photographers with Sanders ,41, in a series of steamy photographs where they were caught kissing. Sanders is married to British model, Liberty Ross, 33, and Stewart had been in a famous relationship with her Twilight costar, Robert Pattinson for the past three years.

Via People magazine, Stewart has issued this public apology:

 "I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected. This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry."

Sanders also issued this public apology via People, "I am utterly distraught about the pain I have caused my family. My beautiful wife and heavenly children are all I have in this world. I love them with all my heart. I am praying that we can get through this together."

Sanders' wife, Liberty Ross, played Stewart's mother in Snow White and the Hunstman and has two young children with her director husband.

See the photo here.