Kardashian and her 2-year-old nephew go sunglasses shopping in Calabasas, Calif. Plus: J.Lo & Casper, Matthew McConaughey, Eva Longoria and more

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EMME NOD

Amid reports that they're cooling off, Jennifer Lopez and boyfriend Casper Smart step out Sunday for a day at the park with the singer's daughter Emme, 4½, in Calabasas, Calif.