Justin Timberlake threw a bucket of ice water over himself all for charity.

The Suit & Tie singer posted the video onhis social media accounts, after accepting the challenge in aid of the ALS Foundation, which raises awareness for amytrophic lateral sclerosis.

Standing alongside the Tennessee Kids, JT launches the chilly water over his head before challenging the next victims of the dare.

Jimmy Fallon, Steve Higgins and The Roots were those unfortunate enough to be on the end of Timberlake's challenge, giving them 24 hours to respond.

The viral charity gameencourages victims to donate $10 and take part, or if they don't fancy it to give at least $100 to the foundation.

Elizabeth Banks, Ansel Elgort and Martha Stewart are just some of the other celebs who have joined in so far.