Saks Fifth Avenue will premiere its new holiday Snowflake Spectacular at its flagship Fifth Avenue store at 6:30 p.m. tonight. The family-themed evening will feature the highly anticipated unveiling of Saks Fifth Avenue’s legendary holiday windows, as well as the 2007 premiere of the storefront LED- light show and a special performance by students from the Jacqueline Kennedy Onassis School at American Ballet Theatre.

This year, the displays have been inspired by the children’s book “Snowpeople,” by Rick and Ryan Zeeb and the book will be sold exclusively in Saks stores nationwide. The flagship windows bring to three-dimensional reality the journey of a group of charming snowpeople, whose search for individual identities culminates at Saks Fifth Avenue in New York City. Behind the scenes, motors of all sizes and types will bring these snowpeople to life-riding the subway, hopping in and out of tour buses. Providing further animation for the windows will be the voice of Marlo Thomas, whose recorded reading of the book will be heard as visitors pass from window to window.

Of course, the windows aren’t the only evening attraction tonight.  The LED-light show will feature 72,000 lights and 50 unique snowflakes reaching 10 stories high. Also, dancers from the Jacqueline Kennedy Onassis School at American Ballet Theatre will perform “Land of Snow” from “The Nutcracker.”