Rob Zangardi and Mariel Haenn, professionally known as Rob + Mariel, have been on The Hollywood Reporter’s “25 Most Powerful Stylists in Hollywood’’ list for 10 consecutive years, for their consistent ability to blow our minds with fashion looks for longtime clients like Gwen Stefani, Jennifer Lopez, Cara Delevingne, and so many more. This week, they’re bringing us inside their creative mindset, including what it’s like to design hardworking costumes for live performances (like Super Bowl LIV) for the biggest superstars in the world.