Her trademark long locks have been chopped off and the actress is now sporting a short, choppy bob. In April the Twilight Saga star dyed her hair orange for a new film, and the 24-year-old's new look suited the orange hue.
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As Kristen posed with Karl, she showed off her outfit - a matching ribbed white crop top with high-waisted drawstring hot pants.
Covering the shorts were sheer panelled culottes and Kristen accessorised her outfit with heavy silver jewellery and simple white heels.
The actress became the new face of the French fashion house in December.
The news was confirmed as she jetted to Dallas for the brand's Metiers D'Art Paris-Dallas show.
She first met Karl Lagerfeld at a photo-shoot in Paris where she was photographed in Chanel Haute Couture. She has since worn Chanel for various public appearances including at the Cannes Film Festival in May.
The actress looked to have finally shed Bella Swan as she gained rave reviews for her portrayal of an aging actress's assistant in Clouds of Sils Maria which premiered at the festival.
Wearing a sequin-covered white jumpsuit from Chanel with nude heels, the outfit highlighted the red hair which she dyed for American Ultra, in which she is teaming up with her Adventureland co-star Jesse Eisenberg.
Still Alice with Julianne Moore, and Anesthesia - and she also found the time to attend the 2014 Met Gala with best friend Riley Keough.
In an interview with Marie Claire she also revealed her thoughts on the public's opinion of her.
"People are like, 'She just can't handle' – for lack of a better word – 'the spotlight'. No, actually, I can't, and this is totally who I am," she told the magazine.
"I don't try to force it or turn it into something else or fabricate this personality… so I totally agree when people say I'm, like, the most awkward person."