Naomi Campbell is flying in Diana Ross to perform at her billionaire boyfriend Vladimir Doronin’s 50th birthday celebrations in India. It is believed the model is paying Ross more than $500,000 to perform at the bash in Jodhpur, Rajasthan. Page Six exclusively revealed Campbell is throwing a two-day bash for his birthday on Wednesday. Guests expected — including Kate Moss and Giorgio Armani — will stay at the breathtaking Umaid Bhawan Palace, one of the last great palaces of India.