Rockettes on their new costumes and their new act, 'Dance of the Frost Fairies'

CBS News' "Sunday Morning" 🌞 on Instagram: "The Rockettes’ magical performances aren’t just a product of talent — there’s also a lot of math that contributes to each precise formation. #rockettes100"

CBS News' "Sunday Morning" 🌞 on Instagram: "Since their beginnings in Missouri a century ago, the troupe known as @therockettes has been celebrated for their deftly-coordinated, high-precision dance moves. Since 1933, they've performed in the annual Christmas Spectacular at New York's @radiocitymusichall. Jane Pauley goes backstage with some of the dancers who have not only carried on the traditions of the Rockettes, but also have helped shape a new, diverse chorus line. #Rockettes100"