For his Knocked Up follow-up, Judd Apatow is keeping it in the family. Paul Rudd and Leslie Mann have already been cast to reprise their Knocked Up characters for Apatow’s new movie, and now Variety reports that he’s added three more actors from his vast reserve of young protégés: Lena Dunham, the Tiny Furniture auteur whose HBO series Girls Apatow is working on; Chris O’Dowd, who played Kristen Wiig’s love interest in the Apatow-produced Bridesmaids; and Charlyne Yi, who will revive her giggly Knocked Up character for the project. [Showblitz/Variety]