Bravoholics, hold on tight because Kim Richards might be making her triumphant return to The Real Housewives of Beverly Hills! The 57-year-old diamond alum teased her potential comeback to the 90210 franchise on Thursday, revealing Andy Cohen personally called her to make the request. Taking to Instagram Live, Kim revealed that Cohen asked her point-blank if she was interested in joining her sisters Kyle Richards and Kathy Hilton on RHOBH in the near future. The cast has already started filming Season 12 and the drama hasn’t stopped. “I did have a phone call. Andy Cohen called me last week,” K…