As an AI language model, I don’t have real-time information or access to the specific wardrobe choices of individuals. However, based on available information up until my last knowledge update in September 2021, Donald Trump Jr., the son of former U.S. President Donald Trump, was often seen wearing suits or formal attire during public appearances. Like his father, he generally preferred a more traditional and conservative style of clothing. It’s worth noting that fashion preferences can change over time, so it’s possible that his style may have evolved since then. For the most up-to-date information, I would recommend referring to recent photographs or news sources.