I recently met with Girls' costume designer, Jenn Rogien, who dished on Jessa’s bohemian aesthetics and how to wear underwear out: “With Jessa, there’s usually an ethereal quality or sheer fabric incorporated into her looks. She’s not like the other girls – we’ve made a conscious choice that showing her underwear is just something that happens in her life, it’s sexy, and it’s a fun accessory to the outfit.” She added, “If you’re wearing a sheer white dress, just make sure to play into the lightness of the fabric by choosing underwear that is more structured and nondescript." Like the Miami-based Cosabella line (worn by the actress on screen), which comes in more than 30 vibrant colors and gives great coverage. Tres cool—in every sense.

Photo: Girls: Jojo Whilden/HBO; others: courtesy of the subjects