Britney Spears, James Franco and Kate Upton Keep Ice Bucket Challenge Going

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Celebrities just can't stop pouring buckets of ice on themselves.

Celebrities just can't stop pouring buckets of ice on themselves for a good cause.

Though it seemed like every A-list celebrity had participated in the ALS Ice Bucket Challenge over the weekend, there were still a few stars left that decided to jump on this charity bandwagon on Monday.

From James Franco ice-bucketing without wearing pants, to Britney Spears giving the best reaction to a bucket of ice being poured on a person, here's a few more of our favorite stars that are participating in this wildly popular charity challenge.


1. Pan Cast- Hugh Jackman, Rooney Mara and Garrett Hedlund


2. Russell Crowe


WATCH: 12 More Must-See Celebrity Ice Bucket Challenges


3. Britney Spears


4. Kate Upton and Justin Verlander


5. Anna Kendrick


6. Garth Brooks


WATCH: Lady Gaga Makes Her Ice Bucket Challenge Art


7. James Franco


8. Jimmy Kimmel


9. Ben Affleck


10. Scott Porter and Hart of Dixie Cast

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