Country's biggest stars have taken the challenge -- the Ice Bucket Challenge! It turns out, dumping a bucket (or many buckets) of freezing cold water on your noggin brings in lots of money for ALS, as millions of dollars have been raised since Blake Shelton and company started taking the plunge.

Watch as dozens of country's top singers answer the call and challenge their peers to do the same. While you're watching, be sure to make a donation the the ALS Association. Keith Urban, Taylor Swift, Hunter Hayes and Chris Young are just a few of the sopping wet stars that make this highlight reel. Though there were a few squeals -- hey, it's cold -- not a one regretted doing what they could to make a difference!

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