Austin Butler chats with ET's Nischelle Turner about his physical transformation into the 'King of Rock & Roll' for 'Elvis.' The actor opens up about how he prepared to portray the iconic singer for Baz Luhrman's musical biopic, and what it meant to have Priscilla Presley's approval. Austin also recalls Tom Hanks' heartwarming embrace the first time they met. 'Elvis' hits theaters on June 24.
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