Aniston envies a swimsuit model

London: She may have an enviable body, Hollywood star Jennifer Aniston still isn`t happy with the shape she`s in. Aniston has flown her personal trainer, Mandy Ingber, to Hawaii, where her upcoming film `Just Go With It` is being shot, to make sure she looks perfect when filming alongside swimsuit model Brooklyn Decker, a news website reported.

"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 said. "She has upped her fitness regime and has had her gym equipment sent to her villa," the source added. The 41-year-old actress already has an intense regime. Since leaving sitcom `Friends` and becoming an A-list celebrity, Aniston has credited Ingber, who is her personal yoga guru and one of her best friends, with her body make-over. PTI