The actress debuted her freshly dyed mane as she posed for pictures on the New York set of the Late Show with David Letterman.
Lightening up: Kristen Stewart arrived for an interview with David Letterman in New York today with a brand new hairstyle
Dark side: Brunette Kristen with Robert Pattinson and Taylor Lautner at the LA premiere of The Twilight Saga: Eclipse last week
It also appeared she'd had her long locks trimmed into a shaggy bob.
She teamed her new 'do with a sleek little black dress with metallic detailing and towering shoes.
Kristen, who has been working overtime to promote The Twilight Saga: Eclipse, previously said she was planning to colour her hair a 'dirty, strawberry blonde' for her next film role.
She is set to play Marylou, the wife of drifter Dean Moriarty in the big screen adaptation of Jack Kerouac’s 1957 novel, On The Road.
The 20-year-old says she is 'over the moon' about the part, adding: 'It was my first favourite book and the character is iconic.'
Filming is set to begin in the coming month.
Quick change: Kristen later swapped into a different little black dress for a screening, which was also attended by Ashley Greene
