Celebrities took to Twitter to register their experience at the march and at other places, according to The Hollywood Reporter.
Hinting at Trump's questionable policies, music icon Madonna, also one of the attendees, said, "The revolution starts here... To the rebellion. To our refusal as women to accept this new age of tyranny."
She added, "Yes, I'm angry. Yes, I am outraged."
"Ugly Betty" actress America Ferrera was one of the first celebs to voice her opinion against Trump by announcing that she was "waging a war" against the new POTUS.
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Ferrera added, "The president is not America. We are America, and we are here to stay."
The city officials stated that the turnout at the Women's March had doubled to the estimate of 500,000 people by Saturday morning.
Tweets and photographs were proof enough that the subways were flooded with participants.
Other stars who participated in the march included Michael Moore, Janelle Monae, Scarlett Johansson, Debra Messing, Ashley Judd and among others.
"On my way over to the Women's March on Washington! I'll be speaking in the first hour. We are the MAJORITY," Moore wrote.
Katy Perry wrote on Twitter, "Unity. Protection. Power. Progress. WOMEN RISE UP! Getting ready to march with my sisters! @womensmarch #WomensMarch"
Whereas singer Zendaya posted her picture on Instagram which showed her sitting on the marching track with a smile and captioned it as "Get up...Stand up"
Democrat Hillary Clinton also tweeted, "Thanks for standing, speaking and marching for our values @womensmarch. Important as ever. I truly believe we're always Stronger Together."