Oprah Winfrey has pledged $500,000 to March for Our Lives.

The media mogul was inspired by the generosity of George and Amal Clooney and agreed to match their donation to the anti-gun violence

cause, which was organised by the survivors of the Marjory Stoneman Douglas school shooting in Parkland, Florida, and will see children and families marching in the streets of Washington D.C. on March 24 to protest gun violence and mass shootings.

She tweeted: ''George and Amal, I couldn't agree with you more. I am joining forces with you and will match your $500,000 donation to 'March For Our Lives.' These inspiring young people remind me of the Freedom Riders of the 60s who also said we've had ENOUGH and our voices will be heard.''

George And Amal - who made the donation in the name of their eight-month-old twins Ella and Alexander - revealed they are planning to march alongside those at the protest, after being moved by the students of Stoneman Douglas High School.

In a statement, the 'Money Monster' star said: ''Amal and I are so inspired by the courage and eloquence of these young men and women from Stoneman Douglas High School. Our family will be there on March 24 to stand side by side with this incredible generation of young people from all over the country, and in the name of our children Ella and Alexander, we're donating 500,000 dollars to help pay for this groundbreaking event. Our children's lives depend on it.''

Steven Spielberg and producer Jeffrey Katzenberg have both reportedly donated $500,000 to the cause, while other stars who have raised awareness for the initiative include Lady GaGa, Justin Bieber, and Morgan Freeman.

Instead of wedding gifts, 'Trainwreck' actress Amy Schumer asked for donations be made to Everytown for Gun Safety when she and Chris Fischer tied the knot last week.