Nigel Lythgoe, 'American Idol' judge and chairman of BAFTA in Los Angeles, said: "Being given the opportunity of meeting Hollywood's elite will provide a highly significant and beneficial moment for them."
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During their time in California from July 8 – 10, William and Catherine will also be attending a meet-and-greet with senior US politicians at the Consular General's Los Angeles residence, as well as visiting an arts-based programme, which assists disadvantaged and homeless children.
The couple – who will be staying at an undisclosed location during their visit – will attend a polo match to benefit the American Friends of the Foundation of Prince William and Prince Harry, with the 28-year-old prince taking part and Kate handing out prizes.
Jamie Lowther-Pinkerton, the pair's press secretary, told USMagazine.com: "The tour will be a double act, but there will be occasions when the couple will separate, such as walkabouts."