Article continues below advertisementDonald Trump Jr.'s eldest daughter, Kai Trump, is a fan of his future wife, Bettina Anderson.The 19-year-old "really likes Bettina and gets along with her well," an insider dished to an outlet, adding they the pair "have made TikToks in the past and always have a lot of fun together."Don Jr. got engaged to the Palm Beach socialite last December after a year of dating, with President Donald Trump announcing the news at a White House holiday party.