In 2004, the "Chicago Tribune" wrote that Trump is "known for his gaudy casinos and unusual mane of copper hair." David Letterman made a joke about Trump's hair in 2008, likening it to a Chihuahua. During a 2011 interview with "Rolling Stone", Trump said, "I get a lot of credit for comb-overs. But it's not really a comb-over. It's sort of a little bit forward and back. I've combed it the same way for years. Same thing, every time." A gallery of photographs depicting Trump's hairstyle across four decades was published in 2015. In various late-night talk shows and interviews, Trump's hair has humorously been suggested to be a wig, so he has let the interviewers touch his hair to verify its authenticity.