Nicole Richie Hair today, gone tomorrow!

Fickle Nicole Richie goes back to lilac just one day after dyeing her locks electric blue

Style chameleon Nicole Richie is clearly a woman who cannot make up her mind.

Just 24 hours after debuting her newly dyed blue hair, Nicole Richie had a change of heart and was back to her favored lilac look.

The mother of two was spotted as she took her son Sparrow to see a movie at The Grove in West Hollywood on Saturday.

Hair today, gone tomorrow: Nicole Richie went back to blue a day after going purple

Mother and son both rocked a grungy look with Nicole in a grey vest top and multi-colored, loose  trousers.

The 32-year-old covered her eyes with dark sunglasses as she held tightly onto her four-year-old son's hand. 

Little Sparrow wore faded red shorts and a checked blue shirt over a yellow T-shirt with a logo of a dog on it.

We're going to the movies: Nicole takes her son to see a film at The Grove in West Hollywood on Saturday

Only a day earlier Nicole sported a new blue dye as she stepped out in Los Angeles.

The colour was the perfect match for her long silk shirt, which featured blue sleeves and a pale grey patterned bodice.

She wore the shirt open over a simple white T-shirt, with white slim-fit jeans, a black leather belt and black and white men's-style dress shoes completing her look.

She added some glitz in the form of a gold necklace and silver studded earrings.

Always one step ahead of trends! Nicole showed her new blue tresses as she headed out in Los Angeles on Friday, having traded in her lilac locks for the brighter hue...but only for 24 hours

Meanwhile, Nicole - who also has six-year-old daughter Harlow with husband Joel Madden - previously revealed during the Lucky Fashion And Beauty Blog conference that her purple hair was a huge hit with kids.

'I coloured my hair for my daughter,' she explained. 'It's a lot of upkeep actually, but I'm very popular at her school. Everyone talks to me when I pick her up because they think I'm a character in Frozen. It's great!'.

While the star is busy working on her jewellery and accessories line, House Of Harlow 1960, she's also currently filming her hilarious series #CandidlyNicole.

The show was recently picked up by VH1, with eight new half-hour episodes set to premiere on July 17 following the popularity of the AOL web series of the same name.

Her husband of three-and-a-half years, meanwhile, is busy acting as a judge and mentor on the new series The Voice Kids in Australia with identical twin brother Benji, as well as relaunching his own music career with his twin sibling.

The Good Charlotte rockers, 35, are currently performing as duo The Madden Brothers, with their debut album, Greetings From California..., due to drop on October 7.

Stylish family: The Richie Maddens pictured here on their French vacation last year.