The London-based entrepreneur-philanthropists Cyrus and Priya Vandrevala will splash out several thousand pounds on a concert by the Philharmonia Orchestra as part of a champagne reception and dinner at Buckingham Palace in honour of the heir to Britain's throne.
A palace spokesperson confirmed the event would be take place on November 21, a week after the Prince of Wales' birthday on November 14, but added: "It is a private event so we would not comment".
The prince is a patron of the London-based orchestra and the music for the evening will be chosen by the birthday boy himself.
Referred to in high society circles here as part of the Indian "Bollygarch" set, Cyrus Vandrevala is a private equity investor and his wife, Priya, is founder and chairman of the Hirco Group - one of India's largest developers of premium residential real estate.
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The couple live in the posh Holland Park area of central London and are involved with a number of charity projects through the Vandrevala Foundation.
They are well known within Britain's royal circles as patrons of the charity Elephant Family, which has been founded by conservationist Mark Shand - the brother of Camilla Parker-Bowles, the Duchess of Cornwall.
"The evening connects with their philanthropic work as the Philharmonia Orchestra supports impoverished performers through its trust", a spokesperson for the Vandrevala Foundation said.
The exclusive black-tie evening in November is open to 250 high-profile guests, expected to include prominent members of the British Indian community as well as friends of the Duke and Duchess of Cornwall.
Queen Elizabeth II has given her consent for the use of her palace as the venue but it has not been confirmed if she would be dropping in at her son's birthday party as well.