Unsurprisingly, Stone wasn't the only celeb who completed the Ice Bucket Challenge this afternoon. Simon Cowell also posted a shirtless video of himself being soaked in cold water by girlfriend Lauren Silverman.
"Hi I'm Simon Cowell and I've been nominated for the A-list ice bucket challenge," he says bursting into an uncontrollable fit of giggles. "I want to nominate Louis [Walsh], Cheryl [Cole] and Mel B."
Additionally, the X Factor creator tweeted to let fans know that his donation was "on its way" to the ALS Foundation.