“Saturday Night Live” star Kristen Wiig is finally coming into her own. After appearing in many movies, and of course the late night TV show, Wiig has finally hit it big with “Bridesmaids.” The unassuming actress was almost astonished when I mentioned to her last night–over dinner at the St. Regis Hotel for the Museum of the Moving Image–that she’s a movie star. “That’s what you say,” Wiig laughed. But now that “Bridesmaids” has put her at the top of the box office, Wiig isn’t resting on her laurels. She’s producing a dramedy called “Imogene,” in which she’ll star. She told me financing is just coming together for the film, which will be directed by Shari Springer Berman and Robert Pulcini (“American Splendor”). The couple specializes in off beat characters–witness “American Splendor” and their recent “Cinema Verite” for HBO. The plan is to shoot the film this summer, while “SNL” is on hiatus. Then, with any luck, we’ll see her back on the comedy show this fall.