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.

Jennifer Lopez Pictures

Enjoy the pictures of Jennifer Lopez hard at work on her new movie (May 26).