A new ad for Cadbury chocolate is leaving a bitter taste with Naomi Campbell. The supermodel is looking at "every option available," including legal action, in response to a promotion that compares the celebrity to a Dairy Milk Bliss bar. The ad reads, "Move over Naomi, there's a new diva in town," and shows the candy bar nestled in diamonds. The campaign ran in supermarkets and newspapers in the U.K. Campbell told the U.K. newspaper the Independent, "I am shocked. It's upsetting to be described as chocolate, not just for me, but for all black women and black people. I...