JENNIFER Lopez was snapped filming her new movie, The Back-Up Plan, in Tribeca, New York, Thursday. The Back-Up Plan, which hits theaters next year, tells the story of a single woman (Zoe, played by Lopez) who decides to get artificially inseminated in response to her ticking biological clock. Sound familiar? Jennifer Aniston has filmed a similar movie called The Baster. Lopez, 39, recently revealed that she takes her twins Max and Emme to work with her. I bring the babies to work with me, she told Entertainment Tonight. I love it. Honestly, one of the best days of my life was the first day back working on this film - I wanted to do this film really badly - and bringing my babies with me that morning. - SS I was like, 'Oh my God, theyre with me, Im making a movie, theyre here Its great having kids on set. Its the best. - SS