Barron Trump, fashion influencer? A T-shirt worn by 11-year-old Barron Trump, the son of President Trump and his wife Melania, sold out in hours after he was seen wearing it when he and his mother arrived at the White House on Sunday (June 11th) as they moved into the executive mansion from New York. The $29.50 gray T-shirt with the words, "The Expert" written in blue letters was sold out on J. Crew's website by Monday.