American Hustle star Amy Adams broke down in tears during a taped appearance on U.S. interview show Inside the Actors Studio when she remembered working with tragic Philip Seymour Hoffman in Doubt and The Master.

The Oscar winner was chatting to host James Lipton on Wednesday (05Feb14) when she was suddenly overcome with emotion, according to audience members.

One eyewitness tells, "She was sobbing and couldn't finish most of her sentences.

"Amy talked about how he was the greatest actor she had worked with, and couldn't even tell stories about him without crying. She said to the audience of acting students, 'I wish you all could have had the chance to work with him'."

Hollywood's heavyweights have all paid tribute to Hoffman, who died of a suspected drug overdose on Sunday (02Feb14), and his closest celebrity friends Joaquin Phoenix, Justin Theroux, Cate Blanchett and Ethan Hawke have visited the actor's longtime partner Mimi O'Donnell and their kids to pay their respects.

Blanchett also pulled out of planned Tv interviews on Thursday (06Feb14), so she wouldn't have to talk about her late friend.