By Katie Nicholl
Friendly rivalry: Jennifer Aniston has flown her personal trainer to the set of Just Go With It in Hawaii. Brooklyn Decker is also starring in the film
'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,' says a source.
'She has upped her fitness regime and has had her gym equipment sent to her villa.'
The 41-year-old actress already has an intense regime.
Since leaving sitcom Friends and becoming an A-list celebrity, Jennifer has credited Mandy. who is her personal yoga guru and one of her best friends - with her body make-over.
When she is not filming abroad, they see each other five times a week, during which Jen concentrates on an 80-minute hard-core fitness routine that combines yoga, martial arts and cardio.
Despite her enviable body, Jennifer Aniston still isn't happy with the shape she's in.
Jen has flown her personal trainer, Mandy Ingber, to Hawaii, where Just Go With It is being shot, to make sure she looks perfect when filming alongside swimsuit model Brooklyn Decker.
Jennifer's flawless figure is thanks to a strict exercise regime combining yoga, martial arts and cardio
She is said to be a fan of Budokon - a martial arts-based exercise involving kicking and punching.
Jennifer also power-walks twice a day with her two dogs, corgi-terrier mix Norman and white German shepherd Dolly.
She has been snapped 'paddle surfing': kneeling on a surfboard while pushing herself along with a long paddle.
This is said to exercise the legs and shoulders.
source: dailymail
Friendly rivalry: Jennifer Aniston has flown her personal trainer to the set of Just Go With It in Hawaii. Brooklyn Decker is also starring in the film
Jennifer's flawless figure is thanks to a strict exercise regime combining yoga, martial arts and cardio
