PS: You do have really good hair on red carpets, and you mix it up a lot. Do you have any favorite looks?
ND: Ilaria is really a head-to-toe stylist, so she thinks of everything — hair, makeup, outfit, shoes. So she'll send me pictures of hair and makeup when she sends me red carpet ideas. But also, my hairdresser, Riawna Capri, is amazing — she did the ombré to my hair, too. She is really creative and will come up with stuff. She's the one who invented the braid bar. I just sit back and I'm like a Barbie doll. I let them do everything.
IU: She's good because she'll let us do what we're good at, and you thrive as an artist in that way. I mean, it's still definitely a collaboration; she knows what works for her body and she has an opinion, so that still makes it fun.
PS: What's been your favorite red carpet look in recent memory?
ND: Oh, that's more for Ilaria.
IU: I like the long-sleeved Jenny Packham we did for the People's Choice Awards. I also like the J. Mendel pantsuit we did at the 2013 Teen Choice Awards with the paint splatters and the ponytail. It was so unexpected; every other girl was in these short little dresses, and Nina came out in a pantsuit!