From Sonny and Cher to Barbie and Ken, some of the most popular twosomes in Hollywood history have decided to separate and go their own ways. But that doesn't make the news of their separations any less shocking. The beautiful, rich celebrity couples that we examine here seemed to have the odds in their favor, so their breakups left us floored. Take a look at our picks for the 12 most shocking celebrity splits, then cast your vote for the most shocking split of all.