CAP D’ANTIBES, France — “Are you ready for Cher? Are you ready for Cher?!” Demi Moore asked the crowd at Amfar’s 30th anniversary gala in Cannes.
“Hell yeah! Of course!” shouted the investment bankers in tuxedos (including a crystal-encrusted denim version) and the women in gowns so huge that waiters had to direct traffic around them. “It’s f—ing Cher!!!” shouted a man in a white dinner jacket who probably arrived by yacht.

