Spies backstage at the Westhampton Beach Performing Arts Center said that Liza Minnelli received a huge bouquet of white flowers in her dressing room from Michael Kors before she hit the stage Saturday night. Susan Lucci was also spotted in the audience, and after the show, Kors visited Minnelli backstage. The legendary singer was overheard saying this had been her final concert before starting a summer vacation in Europe, where she plans to visit friends and see sights she never gets to stop at on tour. We hear that Minnelli recently spent a week in the Hamptons at the home of her longtime friends Alan and Arlene Lazare. She resumes performing this fall at Caesars in Atlantic City on Sept. 28.