Emily Mortimer says 'it's an amazing honor' appearing in 'Mary Poppins Returns'

The star of the new film opens up about what fans can expect from the new sequel.
2:50 | 12/10/18

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Transcript for Emily Mortimer says 'it's an amazing honor' appearing in 'Mary Poppins Returns'
"Mary Poppins returns" hits theaters this Christmas season. We're here with Emily Mortimer who plays little Jane banks from the original, now all grown up. I don't understand why you kept most of this stuff to begin with. Why on Earth did we save this old broken thing? Don't you remember that kite? We used to love flying that with mother and father. Well, it won't fly anymore. Out it goes. No looking back. What a great phone call ma must be. Do you want to be in "Mary Poppins"? Oh my goodness. It's the best. It's from all of our child hoods and meant a lot to every single person I ever met. Saw "Mary Poppins" as a kid, including my own mother and my own children now, and it was a huge deal in their lives. To be able to be part of the sequel was just an amazing honor. So I read that you are afraid of heights. Yes. Don't like to sing in public. No. So you decided to sing suspended in the air in this movie. Yes. I was singing whilst suspended about 50 feet in London, and I looked very happy, but I'm actually completely miserable in that moment. Poor lin-manuel Miranda had to hold my hand, and my palms were sweating. He was acting too. You also got to see Dick Van Dyke? Yes. He arrived on the set, all 91 years of him and did a tap dance and then sat down behind the desk and delivered the most impeccable monologue and made everybody cry. The director was crying so much he couldn't call cut. Someone else had to say it. So much talent. What is it you hope people get out of the sequel. I think, you know, "Mary Poppins" returns to the grown-up Jane and Michael banks from the original and it's showing that we need "Mary Poppins" in our lives just as much asups, if not, more than we ever did as children. We need to rediscover the sense of wonder that a child has. I cannot wait to rediscover with my children, and you got to bring your son, Sam. My son, yes. He came to the premiere? Yes. He is 15 and very cool, understanding and a big film buff, and he completely lost his cool all through the movie. He kept grabbing my arm and saying, mom, this is amazing. This is just so great. That's got to be the best review you could ask for. It really was. It really was, yeah. Yeah. I was frightened he would be too cool for it, but no. He -- totally not. He loved it. Thank you for coming in this morning. Thank you for having it. "Mary Poppins returns" hits

This transcript has been automatically generated and may not be 100% accurate.

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