In 2009, Miller's image was featured on a T-shirt by designer Nick Bowes for the fashion label KRMA. Actors Adrian Grenier and John Stamos were later spotted wearing the T-shirt. Both Miller and Bowes was surprised by the attention it got, saying "When he asked if he could use the headshot, I thought nothing of it. The success of the T-shirt has caught both of us by surprise. I am really flattered and humbled by it." The following year, Miller was named the official ambassador for the 2010 Australian Grand Prix.