Another pop star, Rihanna, performed at a joint birthday party for his daughter, Chloe, and nephew, Matt.But things turned sour between her and Sir Philip after she won a landmark case stopping Topshop from selling T-shirts with her face on. Sir Philip is most closely associated with Ms Moss, who he met at a charity auction at Annabel’s nightclub in 2006, where he successfully bid £60,000 for a kiss from her, before giving it away to Jemima Khan.The Croydon-born pair subsequently formed a friendship that culminated in her signing a three-year deal thought to be worth more than £3m to design clothes for Topshop.She also helped launch a branch of the store in New York alongside Sir Philip, with both becoming a fixture at catwalks and fashion launch shows.The supermodel’s friendship with the tycoon secured her invites aboard his luxury yachts, with Government minister Michael Gove once joking he was the only man to have both her and Tony Blair on speed dial.Ms Campbell has also been a regular at Sir Philip’s lavish parties, having been pictured posing with the businessman and his family at dozens of functions.Ms Paltrow was a guest at his 60th birthday party in 2012, and has been spotted enjoying dinners in London with the retailer.Sir Philip has also been repeatedly photographed with the singer, Beyonce, who debuted her Ivy Park active-wear range for Topshop in 2016. Simon Cowell has not spoken to Sir Philip Green in over three years, friends stressed last night, as celebrities linked to the businessman named as being at the centre of Britain’s #Metoo scandal declined to back him. Cowell and Sir Philip were close friends, and in 2010 announced they were going into business together, although they are not believed to have gone through with the plans. Sources close to Cowell said that the music mogul and The X Factor boss had lost all respect for the retail tycoon over his handling of the collapse of BHS.Other one time associates were silent last night after Sir Philip was forced to deny unlawful sexual or racist behaviour.Kate Moss, who has twice worked with Sir Philip on Topshop lines, was photographed at Heathrow Airport on Friday but said nothing about the furore.Representatives for the super model did not respond to requests for comment, and neither did those for singer Rita Ora, who was pictured at Milan Airport.There was also no reply from the agent of Cara Delvinge, the model-turned-actress who became the face of Topshop in 2014 and who last year claimed to have been sexually harassed by Harvey Weinstein.It was the same story from those representing models Naomi Campbell and Suki Waterhouse and actresses Gwyneth Paltrow, Sienna Miller, Kate Hudson and Kate Bosworth. That was despite all five having spoken out against sexual harassment in the wake of the Weinstein scandal. Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings.