The Marvel hit “Black Panther” was undoubtedly one of the biggest films of 2018. It brought the fictional country of Wakanda to the big screen and showcased exuberant sub-Saharan African culture – and St. Louis native Kevin Mayes was a part of that process. Mayes is a clothing designer who served as the head tailor for the film’s costumes, helping bring the visions of designer Ruth E. Carter to life. “Black Panther” has been nominated for seven Oscars – including best costume design. On Thursday’s St. Louis on the Air , host Don Marsh talked with Mayes, who attended Normandy High School, ahead of the 91st Academy Awards set to take place Sunday.