Jenna Ortega “got shy” when she met Michael Keaton for the first time. The 21-year-old actress stars alongside Michael, 72, in ‘Beetlejuice Beetlejuice’ and Jenna relished the experience of working with one of her acting heroes. The Hollywood star told BuzzFeed: “I have been such a fan of Michael Keaton for such a long time that I think actually seeing him in person, I actually went inside myself because … I weirdly got shy. “But he’s so sweet, he’s so funny, so charming, so professional. I feel like I learned so much by even watching him.” Jenna was also amazed by Michael’s transformation i…