Nicole Kidman shows off her toned arms as she celebrates World Book Day

Nicole Kidman looks stylish as she gushes over the book her new feminist TV series is based on as she celebrates World Book Day

She’s starring in and producing the new AppleTV+ series Roar.

And on Saturday, Nicole Kidman took to social media to plug the book on which her new series is based. 

Sitting on a sunny doorstep, the 54-year-old actress held up her copy of the book Roar, by author Cecelia Ahern.

Bookworm: Nicole Kidman, 54, promoted the book on which her new Apple+ TV series Roar is based upon in an Instagram post on Sunday 

‘So this is my book, I’m going to recommend, that we just made into a series called Roar,’ said Nicole.

Roar is a collection of 30 short stories, each telling the tale of women in different stages of their lives dealing with some kind of challenge. 

It comes just weeks after Nicole debuted a surprising new look – a flirty red bob haircut. 

Page-turner: Sitting on a sunny doorstep, the 54-year-old actress held up her copy of the book Roar, by author Cecelia Ahern

Must read: Roar is a collection of 30 short stories, each telling the tale of women in different stages of their lives dealing with some kind of challenge

Page-turner: Sitting on a sunny doorstep, the actress held up her copy of the book Roar, by author Cecelia Ahern

Who's that girl? Earlier this month the Australian actress debuted a surprising new look - a flirty red bob haircut, ahead of her feature in Apple TV+ series Roar

Who’s that girl? Earlier this month the Australian actress debuted a surprising new look – a flirty red bob haircut, ahead of her feature in Apple TV+ series Roar

However the new hairstyle was simply a wig. 

‘Waiting for you all to come watch @roar with me next week,’ she teased in her caption, referencing the upcoming Apple TV+ series.

In one image, Nicole stared into the distance while on the ledge at a scenic Australian look out.

Meanwhile, in a second her face was turned away from the camera, focusing on her natural surroundings.  

At one with nature: In images posted to her Instagram, the Being the Ricardos star showed off the hairdo, which appeared to in fact be a wig

At one with nature: In images posted to her Instagram, the Being the Ricardos star showed off the hairdo, which appeared to in fact be a wig

The Academy Award-winner’s fans were quick to spot her new do, with many commenting on it.

‘Did you cut your hair?’ one inquisitive follower wrote.

Another added: ‘Your new hair cut’ alongside a series of fire emojis.

And a third simply wrote, ‘Gorgeous!’ 

They like it! Fans were quick to spot her new do, with many commenting on it

They like it! Fans were quick to spot her new do, with many commenting on it

Nicole’s post comes after the first-look trailer for her new Apple TV+ series Roar was released which showed the the star surprisingly eating photographs.   

Each episode of the feminist-themed series tells a different woman’s story – with a different big-name actress in the leading role. 

Alison Brie, Merritt Wever, Issa Rae, Meera Syal, Betty Gilpin, Kara Hayward and Fivel Stewart round off the sterling cast.

Wow: Nicole eats photographs in a first-look trailer for the star-studded upcoming Apple TV+ anthology show Roar, premiering April 15

Wow: Nicole eats photographs in a first-look trailer for the star-studded upcoming Apple TV+ anthology show Roar, premiering April 15

Details: Each episode of the feminist-themed series tells a different woman's story - with a different big-name actress in the leading role

Details: Each episode of the feminist-themed series tells a different woman’s story – with a different big-name actress in the leading role