Known for her long, glossy locks, Sienna Miller was virtually unrecognisable as she unveiled a dramatic new look on Sunday night.
Joining fiancé Tom Sturridge for the world premiere of his new film Effie Gray, Sienna stepped out with a short, cropped hairstyle, a stark contrast to her usually tousled waves.
Sienna Miller revealed her drastic new hairstyle on Sunday night
The 32-year-old fashionista ruled the red carpet in a bright-coloured, printed shift dress from Roksanda Ilincic's Resort 2015 collection, which she paired with black stilettos and a small handbag.
To complement her straight, shorter locks, Sienna chose a ruby red coloured lipstick but kept the rest of her makeup to a minimum.
The British beauty has been dating Tom since 2011, and the couple have a young daughter called Marlowe.
Sienna and Tom have been dating since 2011
"I don't know what the new fashion trends are," admitted Sienna as fashion took a backseat after she gave birth to her daughter. "With my daughter, Marlowe, I don't have time to follow this anymore."
Sienna and Tom made their debut as a couple for Burberry for the autumn/winter 2013 campaign, marking the first time they were professionally photographed together.
"This was a shoot full of love and laughter," said Christopher Bailey, Burberry's chief creative officer. "It was such a treat to work with Sienna and Tom, and to capture their magic together."