Stars struggle with Hoffman's passing

George Clooney is struggling to come to terms with Philip Seymour Hoffman's death.

'The Monuments Men' star paid tribute his 46-year-old "good friend", who was found dead in his apartment in New York City from an apparent heroin overdose on Sunday, at the premiere of his new movie in the city on Tuesday night, and confessed he is "going to miss him a lot."