Transcript for Behind the scenes at The Rockettes Christmas Spectacular

No one kicks the season into high gear like the rockettes and, ginger, you got a chance to go behind the scenes for their big show. The first time they've had four sets of sisters take the stage. Four sets of sisters and two of those sisters are identical twins but get this, I learned that even if I had my sister with me, I wouldn't make the cut. ?????? for more than 80 years it's been a holiday tradition. I'm so excited. Radio city music hall [ chanting "Welcome to radio city"] Reporter: Starring the rockettes. For the first time there are four sets of sisters performing in the New York show from returning dancers to identical twins in their first season. We first wanted to when we were 8 and ever since then we were infatuated. The fact we reached it together is very special. My 14th Christmas. 14th Christmas. It's become our holiday tradition really. It's so special to be on stage and not only sharing it with your season but this experience with the audience because it is a family tradition for so many family. If you haven't been to the theater it holes 6,000 people. 0 rockettes and 36 of you on stage at the same time? Yes. More than 1100 costumes are worn with each rockette changing eight times. I have this one. It looks like we're wrapped up like a Christmas present. I love the holiday spirit that the costume brings. You got a little bow on the back. And sassy tutu. Hatwise? A classic, our parade of the wooden soldiers hat. ?????? Feather, check. Salute. Very good. It doesn't matter where you're from. This show is iconic. We have rockettes coming from all across the nation, Austins, women from England. It's amazing such a powerful company can have such outreach. You can see still see through January 1st, always such a great time with those ladies behind the scenes. You love getting out there, don't you?

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