Cockwise from upper right: NBA player Lebron James, Singer Justin Bieber, New Jersey Governor Chris Christie, media proprietor Oprah Winfrey, singer Jennifer Lopez and singer Lady Gaga. These are just a handful of celebrities who have taken the "ALS Ice Bucket Challenge. AFP
Cockwise from upper right: NBA player Lebron James, Singer Justin Bieber, New Jersey Governor Chris Christie, media proprietor Oprah Winfrey, singer Jennifer Lopez and singer Lady Gaga. These are justShow more

Celebrities join in ALS Ice Bucket Challenge to fight disease