by Matt StoperaBuzzFeedBuzzFeed StaffI've been working here since George W. Kai Trump is Donald Trump's 18-year-old granddaughter, who has been really getting into the whole influencer thing lately. Kevin Dietsch / Getty Images She has a very active YouTube channel. @kaitrump/youtube.com That YouTube channel is full of what you'd expect from a 18-year-old...if that 18-year-old regularly flies on private jets to the Ryder Cup with her grandpa (POTUS). @kaitrump/youtube.com She has videos flying first class to the NBA All-Star Game. @kaitrump/youtube.