KANSAS, US: Kirstie Alley isn’t happy! The actress is convinced that Bridesmaids star Melissa McCarthy is muscling in on her role as reigning queen of the plus-size funny ladies. Sources say Alley - who weighs 220 pounds - is fed up with 5-foot-2, 201-pound Melissa. And it’s all because of a plot twist in Melissa’s sitcom, Mike & Molly. Kristie, 62, used to be fine with 43-year-old Melissa -until CBS began touting the show’s Season 4 premiere, inserting the word “new” into the title and introducing a plot twist in which Molly leaves her teaching job of 10 years and drunkenly carries on about pursuing a career in musical theater.–SH