The 20th edition of Dabboo Ratnani's esteemed calendar has been launched. A list of film actors showed up at the launch to support Dabboo. Even though Rekha didn't shot for the calendar this year, she made sure to pose against the picture backdrops. But, when she realised that she had accidentally stood in front of Amitabh Bachchan's photograph the reaction that came out was hilarious. Watch this video for full story.