American Idol
Credit: Fox Flash

Haley Reinhart and Lauren Alaina are the only two remaining women contestants on American Idol, and they worked their feminine charm with their style during last night’s top 7 episode! We caught up with the show’s costume designer Soyon An for the inside scoop. “Haley, with her tiny frame, looked chic with a ‘50s pin-up inspired dress,” An told InStyle of Reinhart’s red polka dotted frock by Stop Staring ($114 at “The tailored look made the dress look sexy and sweet on Haley.” As for Alaina, An gave the contestant the country look she loves. “I wanted Lauren to look young and fun and bring back her sweet country self this week,” An said of the outfit, which consisted of a Guess jacket, Marciano top, Wet Seal skirt and accessories, and Boot Star boots.

Click through for more details about their outfits—and find out what booted-off contestant Pia Toscano wore for her return!