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American Idol’s finale aired last night—congratulations, Phillip Phillips!—and thanks to Jennifer Lopez, Season 11 may have been the show’s sexiest yet. The former Fly Girl took the stage in everything from rhinestone-encrusted leotards to cut-out bandage dresses, a wardrobe that her stylists tell us takes a lot of prep work. “There are at least 50 shoes to choose from every week, and about 5 racks of clothes,” Lopez’s stylist Mariel Haenn told InStyle.com. “[Picking a dress is] a real game time decision,” said Rob Zangardi, the other half of the pop star’s styling team. “We bring all the options to Idol and then she jumps right in. Two minutes before is when we know what she’s wearing.” Some of Lopez’s sexiest snap decision looks: a semi-sheer silver studded Blumarine dress, a sleek almond leather Reem Acra shift, a curve-hugging metallic bandage Herve Leger look, and an iridescent bodysuit by The Blonds. Click through the gallery to see more of Jennifer Lopez’s sexiest Season 11 moments!

MORE:
• The Blonds on Dressing Jennifer
• American Idol Stars Transform
• Jennifer’s Two Oscar Dresses

— Caitlin Petreycik, with reporting by Lindzi Scharf

What did we expect at the What to Expect When You’re Expecting premiere? Nothing less than pretty off-the-runway looks from the cast’s leading ladies: Brooklyn Decker (in Giambattista Valli), Elizabeth Banks (in Alexander McQueen), Cameron Diaz (in Valentino), Jennifer Lopez (in Maria Lucia Hohan), and Anna Kendrick (in Elie Saab). As for working on a film about the pleasures—and pains—of pregnancy and becoming a mom, Banks said: “It was a great, really familiar thing.” (Banks is mom to son Felix.) So what’s her one mommy must-have? “Great help,” she said. “Grandma, for instance!” See more stars at last night’s hottest parties in the gallery.

— Caitlin Petreycik, with reporting by Andrea Simpson