Although he's been a celebrity since he was a child, Leonardo DiCaprio admits that he too was once starstruck.<br />According to Business Insider, Leo revealed that the late Luke Perry left him starstruck on the set of Quentin Tarantino's new movie "Once Upon a Time in Hollywood." <br />The actor explained, "I remember being in my teens and he was the manifestation of the new [James] Dean on television and everyone was crazy about him. <br />
