Zac Efron, Jamie Dornan, Ice Bucket Challenge

Instagram, YouTube,

Yes, the ALS Ice Bucket Challenge helps raise awareness—and more money than ever before—for research into ALS (also known as Lou Gehrig's Disease), but the entertainment in watching celebs having freezing cold water dumped on them is also undeniable—especially when that celeb is a Hollywood hunk.

Numerous stars continue to show their support for the Ice Bucket Challenge, but the latest roundup just might be one of the sexiest yet! Some of the most recent A-listers to take on the social media phenomenon Jamie Dornan, Eddie Redmayne, Maksim Chmerkovskiy and Zac Efron (who unfortunately wore a shirt...ugh!).

Katy Perry, Ashley Tisdale, Emma Roberts and Lily Allen held it down for the ladies, as well! Take a look...

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