Reporter: She is the best-selling female artist of all time. With 200 million albums sold, mariah carey has produced more hit singles over the past two decades than anyone since elvis and if elvis was... See More
Reporter: She is the best-selling female artist of all time. With 200 million albums sold, mariah carey has produced more hit singles over the past two decades than anyone since elvis and if elvis was the king, mariah is surely the queen. Want to know what 200 million albums can buy you? Barbara walters was wowed when she walked into the superstar's closet a few years back. It's like a movie set. That's a pretty big statement coming from you. ♪ Reporter: Her five octave vocal range has won her so many awards, she needs an entire room to keep them in. I look at this case and I'm like, wow, this is nice. Not so bad. Reporter: But the singer/songwriter/producer has found success in other areas. There was her 2009 critically acclaimed role in the movie "precious." Going to have to talk to somebody if you what pts your check, sweetie. Reporter: And her personal life. She married nick cannon and three years later created her best production yet, her now 2-year-old twins, monroe and roc. In true megastar style she made sure they came into the world with plenty of fanfare. ♪ Reporter: Including her song "fantasy" playing in the delivery room. They came into the world to a live version and the only reason I wanted this to be the live version because I wanted them to hear it. Reporter: The couple renewed their wedding vows every year. Last year with their babies in paris. This year, mariah went from queen to fairy tale princess, stepping out of a horse-drawn carriage to renew her vows at disneyland, adorable babies at her side. ♪ You'll always be my baby ♪ what does this marriage and these babies give you? It's just love. It's a beautiful place to be.
This transcript has been automatically generated and may not be 100% accurate.