Tristan Thompson posts a sweet tribute to his and Khloe Kardashian's son, Tatum, to celebrate his first birthday. See the NBA veteran's Instagram debut with his son! Full Story: eonline.com/news/1381695/tristan-thompson-shares-rare-photos-with-son-tatum-on-childs-first-birthday?source=youtube&medium=enews #TristanThompson #KhloeKardashian #Kardashians #TatumThompson #ENews Subscribe: bit.ly/enewssub About E! News: The E! News team brings you the latest breaking entertainment, fashion and Pop Culture news. Featuring exclusive segments, celebrity highlights, trend reports and more, the E! News channel is the only destination Pop Culture fans need to stay in the know. Download The E! News App For The Latest Celebrity News and Trending Videos: eonline.onelink.me/yMtl/4ead5017 Your favorite shows, movies and more are here. Stream now on Peacock. bit.ly/PeacockEEnt Connect with E! News: Visit the E! News WEBSITE: eonli.ne/enews Like E! News on...