On the concert stage or the red carpet, Jennifer Lopez radiates glamour. "I love all things sparkly," she says, like the yellow Balmain minidress she wore for her Bazaar shoot, and "silver and gold nail polishes." For a wardrobe bold enough to match her confidence, Jennifer turns to Christian Louboutin, Zuhair Murad, Rick Owens, Valentino, Chanel, and Tom Ford. But she will forever be linked with Versace. "I'll never forget the Versace moment," she says of the deep-V palm-print dress she wore to the Grammy Awards in 2000. As for beauty, Jennifer prefers L'Oréal Paris products ("especially Voluminous False Fiber Lashes mascara") and a naturally sexy look. (Her go-to lip? ChapStick.) On her constant travels, she always finds time to shop. Milan's 10 Corso Como is her favorite boutique, and…