Sienna Miller debuts cropped hairstyle as she supports fiancé Tom Sturridge

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 hair

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 Miller and Tom Sturridge

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."