Cadbury India saw a decline in sales after a batch of its Dairy Milk chocolate was found to be worm-infested in 2003, but signed Bollywood star Amitabh Bachchan as a brand ambassador and launched an advertising campaign featuring him to rebuild trust in the brand; consumer trust and sales increased as people believed in Bachchan's endorsement of Cadbury. This demonstrates the impact that a celebrity can have in helping to rebuild a brand after a crisis.