Jennifer Lopez arrives for the The Back-Up Plan UK Premiere at Vue Leicester Square on April 28, 2010 in London, England..At the event in Leicester Square, the star revealed that she didn't take her role as a pregnant woman in the film lightly,Wind aside, she looked every inch the yummy mummy as she worked the pink carpet in a black Lanvin dress, with a nipped in waist to accentuate her famous curves..The actress added a splash of colour to the look with an embellished turquoise necklace (another Lanvin creation) and classic black satin heels, courtesy of Ferragamo..© Antony Jones
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