The Los Angeles stop of Monica and Brandy's legendary Boy Is Mine Tour drew a dazzling lineup of celebrity attendees, including Beyoncé, her momager Tina Knowles, Kelly Rowland, Rihanna, and more. Fans have been absolutely loving the star-studded spectacle. Source: @KellyRowland, @Brandy / Instagram Buzz about the celebrity-packed Nov. 6 concert started circulating when Beyoncé and Tina Knowles were spotted in the audience. According to an Instagram post shared by Ms. Knowles on Nov.