Ashley Tisdale and Austin Butler
The 'High School Musical' actress discovered her family connection with the 'Elvis' star in an episode of Ancestry's '2 Lies & A Leaf' series. It turns out that Ashley Tisdale and the actor. who both starred in 2009's 'Aliens in the Attic” and 2011's 'Sharpay's Fabulous Adventure', are 10th cousins.