Hilary Duff thinks online shopping might possibly be the best invention ever: “I’m so addicted, I almost don’t leave my house anymore,” jokes the 22-year-old. “How great is it that you can order what you want and it shows up at your door the next day?” The actress/singer lives in casual staples and uses them as a starting point for almost any occasion: “When I’m going out, I tend to just transition my outfits from day to night,” she explains, by adding on pretty cardigans or striking shoes and jewelry.