By Kelsey Glein
Updated Mar 20, 2015 @ 11:21 am
Credit: Courtesy Photo

Jennifer Lopez is kicking off this season of American Idol in true J. Lo style. The star went sexy and bold for last night's episode, where she sparkled in a midnight blue Elie Saab romper covered in a multitude of sequins and slivers of sheer fabric. Lopez topped off her look with suede Casadei pumps and a selection of Endless Jewelry.

But that wasn't the only ensemble that she rocked during the show—to perform onstage, she swapped out her glittery number for a dramatic sweeping Mariel Haenn white gown.

Credit: Courtesy Photo

The star also switched up her hair to complement each of the vastly different outfits: "We wanted two different looks tonight for the show and then Jennifer's performance of 'Feel the Light,'" says Lorenzo Martin, Lopez's hairstylist. "To create the braid I prepped the hair with dry shampoo, put it into a high pony, and then loosely braided the ponytail. I finished the look by messing with the braid and taking out a few loose pieces. For the performance, I tied up the braid into a quick bun and secured with bobby pins so her hair was completely free from her face."

Stay tuned for more looks from J. Lo as American Idol continues all season long.