Jennifer Lopez on April 11, 2012, April 4, 2012, and March 28, 2012. Credit: PictureGroup (2); Getty

Christina Aguilera may be getting a lot of attention for her daring style on The Voice, but no one turns heads onscreen -- and off -- like Jennifer Lopez.

The American Idol judge, 42, who has changed her look dramatically through the years, can pull off just about any hot trend, according to her stylists Rob Zangardi and Mariel Haenn.

"We play with colors, styles and silhouettes," Haenn tells Us Weekly. "We call her 'Bronx Barbie,'" adds Zangardi. Indeed, the duo loves to dress up J.Lo in an array of flashy looks.

The superstar wowed fans on AI, when she stepped onstage in a skin-tight, long-sleeved leather cut-out dress by Catherine Malandrino April 11.

She dazzled in a pleated lame maxi skirt and white cap-sleeve top (both Lanvin) with a Cora 50.4 carat yellow radiant diamond ring worth a whopping $2.1 million on April 4.

Lopez rocked a sleek white halter Gucci jumpsuit with a gold belt and matching strappy sandals March 28. "Before she hits the stage, we stack on bangles and rings to finish off the look," Zangardi tells Us.

Other fab frocks include neon pink and highlighter green Michael Kors dresses ("We're loving bold, beautiful colors this spring," says Zangardi) and a copper Randi Rahm baby-doll number. "It was a cool way to mix metals," he says of the look.