Reese Witherspoon sports fiery locks as she stays warm in cape and fur lined boots on LA set of A Wrinkle In Time

She's known for her signature blonde locks.

But Reese Witherspoon sported fiery red tresses while working on the Los Angeles set of her upcoming fantasy adventure A Wrinkle In Time.

The 40-year-old Wild star donned a white warming cape and brown fur-trimmed boots while carrying an umbrella on Tuesday.

Red hot! Reese Witherspoon sported fiery tresses while working on the Los Angeles set of her upcoming fantasy adventure A Wrinkle In Time

The Oscar-winning actress plays the fantastical character Mrs. Whatsit, who was formerly a star that exploded in an act of self-sacrifice to fight darkness.

She wore a smokey eye with black liner, bright rosy cheeks and pale pink lip gloss for added shine. 

Reese's upcoming film is based on Madeleine L’Engle’s book series, Time Quartet.

Wardrobed Witherspoon: The 40-year-old Wild star donned a white warming cape and brown fur-trimmed boots while carrying an umbrella on Tuesday

The story follows children as they travel through time to find their missing father. On their travels, they visit strange and mysterious worlds. 

Chris Pine, Oprah Winfrey, and Mindy Kaling are also attached to star in the film which won't hit theaters until 2018.

She took to Instagram on Sunday to wish her co-star a happy birthday alongside a photo of the pair she captioned: '#HBD to this bright and beautiful soul! @oprah.'

Fantasy film: The Oscar-winning actress plays Mrs Whatsit, who was formerly a star that exploded in an act of self-sacrifice to fight darkness

Reese, who will play Mrs. Whatsit, also shared a snapshot with her 8.4 million followers last month from set of her personalized director's chair. 

The blonde beauty has also been busy producing and starring as Madeline Mackenzie in Big Little Lies whice debuts on February 19.

The HBO series - which premieres next year - also features Nicole Kidman, Laura Dern, Shailene Woodley, and Alexander Skarsgard. 

'This bright and beautiful soul!': The blonde beauty took to Instagram on Sunday to wish  co-star Oprah Winfrey a happy birthday alongside a photo of the pair she captioned

Based on Liane Moriarty's 2014 novel, Big Little Lies centers on a group of mothers 'whose perfect lives begin to unravel.' 

She also has plenty to smile about, as ABC picked up a divorce drama from her production company.

The TV show - named Broken - will center around a ruthless Dallas divorce lawyer whose life begins to fall apart when her sister arrives back in town, exposing family secrets. 

Action! Reese shared a snapshot with her 8.4 million Instagram followers last month from set of her personalized chair

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