Transcript for 2013 'Most Fascinating': Miley Cyrus on Life After Liam Hemsworth
And now for this year's list, we start with a woman who turned 21 last month, yet this is already her second appearance on our show. I don't know how much you remember about our first interview with miley cyrus in 2008, but it doesn't really matter because that little girl is long gone. ♪ I came in like a wrecking ball ♪ this year, miley cyrus got on a wrecking ball and destroyed hannah montana. Hi, this is miley. ...The wholesome teen she played on tv since she was 13 years old. I'm not gonna do hannah montana... She was murdered. ♪ La da de da de we like to party ♪ depending on your point of view, there were other causalities, too. Like fashion. ♪ But you're a good girl, yes, you are ♪ and public decency THAT'S MILEY DANCING AT THE VMAs WITH ROBIN Thicke, a performance featuring perhaps the most creative use of a foam finger. She puts that foam finger in places that will shock you. That was really, really disturbing. I watched her performance last night with my hands over my eyes. Do you have any regrets about what you've done this past year? Not at all. It wasn't just shock people to shock people. It really was with, like, you know, a purpose, I guess. Which was? To make myself -- everyone in the world -- be talking about me and my music, which right now it is. ♪ If you're not ready to go home ♪ her new album, "bangerz," debuted at the top of the billboard charts. And she's about to go on a world tour. She made twerking not just a mainstream activity, but an actual word in the dictionary. And her video, "wrecking ball," shattered online viewing records, with more than 402 million views. Once again, miley is a pop culture icon. If I want to go get breakfast for my dad or... But when I first met her five years ago, she was definitely more innocent. Do you ever swear? No! You stub your toe -- what do you say? Uh...I don't know. "ow"? bet your parents would be furious if you swore, huh? Yeah. you went from being hannah montana to -- to what? You tell me. I really feel like every day I'm figuring it out. People that know me, they see me change, really every week, every two weeks. I'm changing and learning so much, I think especially now that I feel like I found more of my independence. I don't think I was ever really happy with who I was. You have been half naked almost this whole year, it seems to me. It's getting cold now, so I got to -- you're wearing a little silk shirt. Do you want to be naked? I don't always want to be naked. Once I came out on stage and I came out -- I was in a full marc jacobs dress, completely covered, and they wrote, "miley is boring. She doesn't get naked and she's boring." No matter what I do, I'm either boring or I'm a slut. miley, why do stick your tongue out all the time? 'Cause I get embarrassed to take pictures, so I stick my tongue out because I don't know what else to do. My mom's the one that gets the most mad at me about the tongue. And now people go, "do the tongue thing," so now I can get away with it. I was just going to say -- are you nervous with me? No, I'm not. I don't have to do this. OKAY. Amazingly, at her side through it all has been her mother, who is also her manager, tish. Some of the things that miley has done -- are these things that you encouraged her to do? Absolutely not. that's true. Absolutely not. I have to admit, like, there's times as a mom I'm like, "oh, my. What were you thinking?" You know, you have to realize this is a 20-year-old girl. 21. Oh, yeah. Don't be forgetting that I just had a birthday. Sad. Okay, 21. But these things were happening at 20. This is what 20-year-olds do. You know, she's just doing it in front of the world. Where do you see your daughter in 10 years? 10 years?31. Gosh. Oh, god. I hope I have grandbabies, barbara. Ugh! Not at 31.31, I'm gonna still be on tour. Walters: For now, her love affair is with her fans. Earlier this year, miley called off her engagement with "hunger games" star liam hemsworth. You and your then-fiancé, liam hemsworth, broke up this year, and you wrote about it in a song, "drive." You sing, "i was crazy thinking you were mine. It was all just a lie." What was the lie I don't think there was any lies. I was so scared of ever being alone, and I think conquering that fear this year was actually bigger than any other "transition" that I had this entire year. I don't ever want to have to need someone again, where you feel like without them you can't be yourself. But that's called being in love. That's called maybe wanting to be married to someone for the rest of your life. You don't want that? I think I'll want that in the time that it needs to be, you know? I don't think I realized what 19 truly is, and I got engaged at 19, and I definitely wouldn't change being engaged. It was so fun wearing a fat rock for a few years, but now I just feel like I can actually be happy. I wait for those moments of silence when I'm just at my house by myself. Anyone in your life now? No, but I'm looking. If you hear of anybody here in new york, you let me know. I don't think you will have a hard time. you know what? You would be surprised. Me and my mom were talking about this the other day, 'cause I was just saying, you know, I was like, "oh, he wouldn't like me." And she was saying, "you're the biggest star in the world." I'm like, "yeah, but that's not why I want people to like me." I can see the difference in how much you've grown in just the five years since my last interview with you. When do you reinvent the next person or become the next person? 2014 is gonna be a whole 'nother year. I'm gonna get to work on my acoustic record. I'm gonna get to go on tour -- with clothes on? Clothes on, too. You will be happy. I will invite you to my first show in new york, and you'll be happy to know I will have clothes on. I don't know how much, but I will have on clothes. I will be there. Thank you. Thank you, miley. Mm-hmm. Miley is not the youngest person on our list. Coming in at eight pounds, six ounces, on july 22nd of this year is the royal baby, prince george. This year, several billion people were invited to a baby shower. Although there was nothing to report, the press came anyway. Good evening from buckingham palace. For weeks, several hundred reporters from around the world were at the hospital, waiting and waiting. A lot of excitement here. Or maybe not. Walters: And waiting. There! FINALLY, ON JULY 22nd, His royal highness prince george alexander louis of cambridge was born. Like most new parents, the mom, the former kate middleton, was radiant, and the dad, prince william, was proud. He's got her looks, thankfully. No, no, no, no. I'm not sure about that. Although only eight pounds, six ounces, little prince george has a weighty destiny. Third in line to the throne, he will one day, maybe as far away as 60 years from now, be the 71st monarch of england. Like all babies, he is the culmination of all that precedes him. The ceremonies and christenings, the celebrations and tragedies. A symbol of england's improbable but beloved monarchy. He is a reminder of the past, the glories of his country's history. And like all babies, he points us toward the future, unknowable, yet somehow full of hope.
This transcript has been automatically generated and may not be 100% accurate.