The next generation! Zendaya, Willow Smith, Demi Lovato, Bella Thorne and Ariana Grande lead young Hollywood at Women's March

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Some of them just voted for the first time; some of them are not even old enough to vote at all.

But young female celebs still demanded their voices be heard during Saturday's thunderous Women's March.

Zendaya, Willow Smith, Miley Cyrus, Ireland Baldwin, Demi Lovato, Ariana Grande and Bella Thorne were just some of the teen and twenty-somethings that got involved in person and on social media.

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Hear our voices: Zendaya, Bella Thorne and Demi Lovato were among the teens and twenty-somethings who joined the Women's March on Saturday

Zendaya, 20, took over Vogue's Snapchat account for the event, filming herself marching with the crowd - even if she didn't know where to. 

'We don't even know where we're going , we're just following the crowd,' she gleefully announced. 'We're just following the fabulousness.'

She joined in the chats of 'They go low, we go high' and 'Yes we can', and shared pics of her favourite placards, including 'A woman's worth is not determined by her appearance', and 'Putin in the White House'.

Bella Thorne also had her Snapchat ready, filing herself and her posse as they added their voices to the throng. 

Leading: Zendaya, 20, took over Vogue's Snapchat account for the event, filming herself marching with the crowd - even if she didn't know where to

Fab: 'We don't even know where we're going , we're just following the crowd,' she gleefully announced. 'We're just following the fabulousness.'

Involved: She joined in the chats of 'They go low, we go high' and 'Yes we can'

Popular: The young singer stopped to take photos with fans young and old

Dressed all in pink, with some glitter make-up to boot, the 19-year-old braved a cold nose as she joined in.  

'Guys I'm here, I'm marching, if you're not, make your way cause I'm gonna f***ing march!' she declared.

Like Zendaya she joined in chants of 'This is what democracy looks like!' and snapped some of her favourite signs too, which were a little more colourful.

Thorney issue: Bella Thorne also had her Snapchat ready, filing herself and her posse as they added their voices to the throng

Chilly: Dressed all in pink, with some glitter make-up to boot, the 19-year-old braved a cold nose as she joined in

Join me: 'Guys I'm here, I'm marching, if you're not, make your way cause I'm gonna f***ing march!' she declared

Proud: 'Honestly makes me really happy because i see a lot of teens out here,' Bella proudly told her Snapchat followers. 'Not just men and women but actual teenagers.'

Don't grab it: Bella had a digital sign of her own via a Snapchat filter, which read: 'I'm here for abortion rights'. It also featured a little placard reading 'hands off', held up by an angry looking pussy

One protester had a rainbow coloured umbrella on his placard which read: In case of golden showers'; another declared: 'Our rights are not up for grabs, and neither are' along with a very detailed painting of a vagina.

Bella had a digital sign of her own via a Snapchat filter, which read: 'I'm here for abortion rights'. It also featured a little placard reading 'hands off', held up by an angry looking pussy.

'Honestly makes me really happy because i see a lot of teens out here,' Bella proudly told her Snapchat followers. 'Not just men and women but actual teenagers.'

Pee'd off: One protester had a rainbow coloured umbrella on his placard which read: In case of golden showers'

Pricey: She also spotted this effigy with a rather fetching jacket

Young start: Despite not even being old enough to vote, 16-year-old Willow Smith got in on the action, sharing a pic of herself in the middle of a march, holding aloft a 'Savages for equal rights' sign

Despite not even being old enough to vote, 16-year-old Willow Smith got in on the action, sharing a pic of herself in the middle of a march, holding aloft a 'Savages for equal rights' sign.

Miley Cyrus, 24, meanwhile put on a typically colourful display as her foundation - Happy Hippie - supported Planned Parenthood.

She even got Jamie Lee Curtis dancing in one of her Instagram boomerangs, who was holding an apt 'what she said' placard. 

Trademark: Miley Cyrus, 24, meanwhile put on a typically colourful display

Backing: Her foundation - Happy Hippie - declared its support for Planned Parenthood on the day

Protest: This will have been Miley's second time to vote in a Presidential election - and the first to not go her way

Scream queen: She even got Jamie Lee Curtis dancing in one of her Instagram boomerangs, who was holding an apt 'what she said' placard

Fellow 24-year-old Demi Lovato also found herself some celeb backing in the crowd, linking up with U2's The Edge and Lance Bass as she marched.

 Ariana Grande shared a number of photos of her favourite protester: her 91-year-old  grandmother 'nonna' Marjorie.

'today filled my heart with so much hope !! got to meet many beautiful, passionate people and march alongside my loved ones. the sun came out for us,' she wrote.

Famous faces: Demi Lovato also found herself some celeb backing in the crowd, linking up with U2's The Edge

In sync: She also ran into Lance Bass as she marched

'We are so much stronger and louder than hatred, ignorance, sexism, racism, agism, homophobia, transphobia, body shaming, slut shaming, prejudice, discrimination of all kinds, patriarchal conditioning and the backwards expectations of what a woman should be!

'I'm so proud of / inspired by everyone who marched today and thankful that there are so many people on this planet currently celebrating how brilliant and magical women truly are!

'let's keep our voices loud, passionate & peaceful! let's continue being strong for each other and to build each other up! let us stay connected to our divinity,' she concluded.

'Not a bad idea!': Ireland Baldwin shared a selection of her favourite signs, including one calling for her dad Alec Baldwin - pictured as Trump in his famous SNL skit - as an alternative choice for president

Even those who could not be there were there in spirit — or at least on social media.

Ireland Baldwin shared a selection of her favourite signs from the marches (Ikea has better cabinet choices / 'Though shalt not mess with women's reproductive rights - Fallopians 4:28').

Best of all was a young child calling for Ireland's dad Alec Baldwin - pictured as Trump in his famous SNL skit - as an alternative choice for president. 

'Wish i could be marching with my fellow supporters!' the 21-year-old wrote. 'love to everyone who's out there making a difference'

Still going strong: Ariana Grande shared a number of photos of her favourite protester: her 91-year-old grandmother 'nonna' Marjorie

Nonna: 'today filled my heart with so much hope !! got to meet many beautiful, passionate people and march alongside my loved ones. the sun came out for us,' she wrote

United: 'We are so much stronger and louder than hatred, ignorance, sexism, racism, agism, homophobia, transphobia, body shaming, slut shaming, prejudice, discrimination of all kinds, patriarchal conditioning and the backwards expectations of what a woman should be!' she wrote

Bella Hadid meanwhile posted perhaps the most confusing post of the day, when she accidentally shared a pic of the 1995 Million Man March instead.

'F*ck yeah! Women! I feel so proud My city of birth and every woman just came thru!!!!!!' the LA native perplexigly wrote of the Washington pic.

'Sad I couldn't be there but incredibly proud of the women that are representing ! Xox we miss you Obama,' the 20-year-old added. 

Good effort: Bella Hadid meanwhile posted perhaps the most confusing post of the day, when she accidentally shared a pic of the 1995 Million Man March instead

Vanessa Hudgens, 28, also took to Instagram to make her voice heard as she posted a black and white snapshot.

With a photo of herself and friends holding up signs in protest, she captioned the raw image, 'United we stand.'

Singer Halsey, 22, took to Twitter on Thursday and shared with her 3.85 followers her plans for the Women's March.

'United we stand': Vanessa Hudgens, 28, also took to Instagram to make her voice heard as she posted a black and white snapshot

'Make sure to support your local #womensmarch! Cant wait to march with those of you who I'll see in Washington D.C. on Saturday,' the Closer songstress wrote.

And she followed through while posting an Instagram snapshot at a rally with a group of friends which she captioned: 'look cute and fight injustice.'

She also shared another photo of a massive group of demonstrators which she wrote alongside, 'History has its eyes on you.' 

'History has its eyes on you': Singer Halsey, 22, took to Instagram and posted a snapshot at a rally with a group of friends

In the pink: Millions of women gathered for marches around the world, including Washington (pictured)