Jennifer Lopez unleashed her inner diva on a shopping trip at the Catherine Malandrino Boutique in Long Island last week.

“She demanded the store be shut down for her to shop alone, but they said, ‘Absolutely not,’ “ a New York Post spy says. “Then one of her eight-person entourage, including two bodyguards with their guns showing, was yelling at the clerk that Jennifer gets a 50 percent discount. Jennifer also tried on about a million outfits, then just threw it all in a pile in the dressing room and didn’t buy one thing.”