Karl Lagerfeld has branded Kristen Stewart "one of the greatest actors of her generation" after she starred as the late Coco Chanel in the new biopic 'Once and Forever.'

Karl Lagerfeld

Karl Lagerfeld

The 82-year-old fashion designer has created a short movie based on the life of Coco - the founder of the brand Chanel - and has praised the 25-year-old actress on her portrayal.

Speaking to WWD.com, he said: "I think she's one of the greatest actors of her generation. She gives the right emotion and the right intensity immediately so it's very easy to work her, like it's easy to work with Geraldine."

'One and Forever,' which is set to debut next month, is the twentieth mini movie the legendary designer, who is the creative director of Chanel, has created since 2008.

Lagerfield, who has previously worked with Keira Knightley and Cara Delevingne on his films, believes his on-screen creations are better than any other biopics released recently.

He explained: "They're all horrible. All my movies about Chanel are better than the biopics, just like the Saint Laurent movies. I could make a better one because I knew it."

However, despite believing his mini movies are fantastic, he is adamant he won't be making a feature-length in the future.

He added: "If I have feature-length time. I'm easily bored so if I have to do it like the others in three months, forget it."

Meanwhile, 'Once and Forever' will premiere at his Métiers d'Arts show at the Cinecittà in Rome on December 1.