Donald Trump’s 18-year-old granddaughter continued her public support for her grandpa on Tuesday night, posting a good luck message to him ahead of his debate showdown against Kamala Harris. Kai Trump, the daughter of Donald Trump Jr. and his ex-wife, Vanessa Kay Trump, shared photos of herself at the RNC along with her message on Tuesday evening. “Tune into the debate tonight!” she wrote. “We love you grandpa go and kick butt!” Kai just began her freshman year of college at the University of Miami, where she’s also on the golf team. She spoke on stage at RNC in July to sing her gramps’ praises in front of his party-mates even when others in his family, most notably Melania Trump, elected to instead watch on from the Milwaukee crowd.