Over the past two weeks, you may have noticed something strange and sexy about your Twitter and Instagram feeds.
Celebrities ranging from Taylor Swift to Cristiano Ronaldo have decided to upload videos of themselves being doused in freezing cold ice-water, and they're as awesome as they are confusing.
But don't worry, it's not just some beautiful person game that we all haven't been invited to. It's all to raise awareness for the ALS Association, who help provide care for people suffering from Amyotrophic Lateral Sclerosis. So far, the campaign has led to an astonishing $16 million in donations.
Proving once and for all that hot girls and cold water are a life-changing combination.
To celebrate the success of the movement, we thought we'd round-up some of the celebs that left us needing a cold shower of our own…
And as a bonus: a load of sexy models giving this beardy bloke an ice bath...
If you would like to donate to the ALS Association, then hit up their site.