Jennifer Lopez: Back for More "Back-Up Plan"

Back on the set of her latest movie, Jennifer Lopez was spotted walking to her trailer on the set of "The Back-Up Plan" in Los Angeles on Tuesday (May 26). Showing off her curvaceous figure, the "Wedding Planner" actress strolled along in tight black workout pants with a white t-shirt and charcoal zip-up jacket. Aside from her movie duties, Lopez has also been spending time kick-starting her new charitable endeavor, the Maribel Foundation. Inspired after she and hubby Marc Anthony found a lump on the head of daughter Emme, Lopez tells, "We both got very nervous, and I just remember my heart sinking to my feet." The Maribel Foundation helps provide pediatric medical services for those who cannot afford to pay themselves.