Diane Sawyer: [coming up preview] Our Countdown to the Oscars, Best Supporting Actress nominee, third time nominee, Kate Winslet joins us from London.

Diane Sawyer: Actress Kate Winslet has been so powerful from so young, as we've seen her in the movies over the years. Perhaps most of us saw her in Titanic in the arms of Leonardo Dicaprio. We also saw her in the company of another man named Oscar when Kate Winslet became the youngest actress ever to be nominated three times for an Academy Award for Sense and Sensibility, then Titanic and now for the movie Iris. And she joins us from London as we continue our countdown to the Oscars. Thanks a lot, Kate. It's good to see you this morning.

Kate Winslet: [via satellite] Hello. It's good to join you. Is that true? Am I really the youngest?

Diane: You are the youngest ever for a three-time nomination.

Kate: [beaming] That does feel quite nice.

Diane: I was going to say, have a good day. Feel good about yourself today.

Kate: I think I will, I think I will. Thank you.

Diane: I want to talk a bit about Iris for people who haven't seen it. It is a tough topic for a movie. It is the story of Iris Murdoch and her ultimate descent into Alzheimer's. I know you were chosen to play Judi Dench, because, well even you have said you spirit of Judi Dench, maybe the same song in the soul. What is that?

Kate: Ummm, I don't -- i don't know. You know, It's completely sort of amazing to me to be honest that I was asked to play this part. And just incredible that, you know, being asked to play the young Judi Dench is -- it's just something, that's a once in a lifetime opportunity. It's not something you say no to. I was frightened and petrified to the thought of playing someone who was so much kind of older than me in terms of plays Iris. [adjusting her earpiece] Ummm, I've got so much feedback in my ear. It is confusing talking to you.

Diane: I hope we can turn that down.

Kate: I was very nervous playing the young Judi.

Diane:How do we know...

Kate:I managed to pull it off.

Diane: How do we know you have nerves? What happens to you when you're nervous

Kate: When I'm nervous, what I try to do is fight through it really. That's all can you do as an actor. You can't hide behind your fears, because then you're not doing your job properly and not conveying an honesty to an audience. For me, you're constantly trying to do. You have to literally try to is swallow all of that and fight through it

Diane: I want to play a clip from the movie back in the 1950'S. A young Iris Murdoch is talking to an eccentric young man who would ultimately become her husband, John Bayley.

[Iris Clip]

Iris: What are your rooms like?

John: Adequate, thank you.

Iris: I'd like to see them.

John: Oh. Do you -- do you have a lot of friends?

Iris: There is a list of my friends necessary?

John: I wondered if you had many?

Iris: There aren't many people that one wants to know one. Do you --

[Iris trips on a step and slides down the stairs.]

John: Iris!

Diane: It's a magical moment. I want to tell you something, you know, I went to Afghanistan recently. And the astonishing thing happened to me. I'm walking along, and what do I see in Afghanistan, as the Taliban had just fled, but your picture up on a wall. I went up to everybody there, and said, you don't know who this is, do you? They all knew exactly who you were. They've been hiding videos of you in Titanic in food bags, under their pillows, passing them from hand to hand.

Kate: [moved] Really? That's so --

Diane: They said to me it was one of the thing that has sustained them was being able to share Titanic during all of those years.

Kate: That is -- that's so amazing. That really makes me want to cry. And also, you know, reconfirms what we all knew about Titanic, which is that it was just enormous, you know?

Kate: And everyone saw it I mean, I've told this story before, but I remember being in India soon after it was released. I was walking in the foot hills of the Himalayas. I was researching another movie that I was working on. An old man who must have been -- he must have been about 90 years old. He was blind. His eyes were sort of milky white. He just sort of looked up at me and he said, you Titanic and he knew. I was in the middle of nowhere. There was no one else around at all. I couldn't believe it. I just seen this footage that you showed there. That's bizarre and amazing and wonderful at the same time.

Diane: The kids in the audience here have one question for you. You know the question. Which is, I think the age demographic was about 14. How does Leonardo Dicaprio kiss?

Kate: [a little exasperated] I cannot believe I'm still being asked that question!

Kate: Well, it was -- if I'm really honest, you know, it was a bit like kissing your brother because we were such good friends. And it felt really kind of strange. I don't know that I actually thought about it that much. I think we were both quite happy that it was over because it really did feel like kissing your mate it wasn't a particularly comfortable experience because of that because we were such good friends. He's a sweetheart. He is a lovely wonderful guy. Brilliant actor. I certainly had a great time working with him.

Diane: Thanks. It's great to talk to you this morning. Congratulations again. We'll all be watching Sunday night.

Kate: Thank you very much.

Source: Transcription and Captures by Discover Kate.