The actress needs to raise $150,000 by March 28 to complete post-production on writer-director Mary Agnes Donoghue's film. "Jenny's Wedding is a movie I'm so proud to be a part of," Heigl, 35, tweeted Wednesday. "Love the story and the characters. Hope you will too!" She later tweeted, "The producers are just as passionate about @jennys_wedding as I am, but need your help to make it happen...."