Working mother hot Jennifer Lopez proudly shows off her huge

Wearing a beige trapeze coat, Jennifer Lopez's baby bump is proudly on display for all to see.

But the Latina beauty is not planning another addition to her family just yet - the rounded tummy is just part of her costume.

The 39-year-old actress is playing the part of a mother-to-be in her new movie The Back-Up Plan.

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In the film, Lopez's character is so desperate to have a baby she artificially inseminates herself.

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She becomes increasingly desperate to hide the signs of her pregnancy from her new man, resulting in a comedy of errors.

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However when he finds out the reason for her strange behaviour he decides to support her decision.

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J-Lo filmed several scenes with Moonlight actor Alex O'Loughlin, who plays her love interest in the film.

The 39-year-old actress was joined on the New York film set by her one-year-old son and daughter yesterday.

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Twins Max and Emme were cared for by Jennifer's mother Guadalupe as the actress filmed her scenes in the romantic comedy.