Jennifer Aniston and Nicole Kidman: Maui Mates

Hard at work on their latest project, Jennifer Aniston and Nicole Kidman were spotted out on the set of "Just Go With It" in Maui, Hawaii on Monday (May 3).

Looking to be having a lovely time in the tropical locale, the former "Friends" star was all smiles as she rode around on a golf cart in between takes while joined on-set by her "Australia" actress co-star.

The sighting comes amidst reports that the 41-year-old has flown in her personal trainer, Mandy Ingber, to keep up her hot body while working alongside SI Swimsuit covergirl Brooklyn Decker.

“Jen has been getting really wound up with the wardrobe department because her costumes are so skimpy and she’s worried about working with a younger model with a hot body,” a source told Britain’s Mail on Sunday. “She has upped her fitness regime and has had her gym equipment sent to her villa.”

Enjoy the pictures of Jennifer Aniston and Nicole Kidman on the "Just Go With It" set (May 3).