From Justin Timberlake to Jimmy Parsons - it's the craze that has taken the celeb world by storm.
We're talking about the ALS ice bucket challenge which has seen many high profile celebrities drenching themselves in icy water in the name of charity.
The internet craze set up this summer has seen a whole host of A-listers and business leaders pouring buckets of ice and water over themselves to raise awareness of motor neurone disease (also known as ALS, or Lou Gehrig's Disease). The disease affects around 5,000 people in the UK.
After each star has filmed themselves enduring several seconds of icy pain, they then nominate up to three more well-known figures to undergo the same public humiliation.
Check out some we've enjoyed:
Robert Downey Jnr
By Jody Ball
- Have we missed out your favourite celebrity that has taken on the challenge? Let us know, leave your comments below