Frosted fairies swoop between snow-covered trees as they guide a young boy from his bed to a whimsical forest with reindeer, angels and holiday magic.<br /> <br />No, it's not a trailer for a Disney release - it's just outside the Macy's flagship store in New York City, where six display windows have been transformed into an animated story.<br /> <br />While retailers in cities across the United States also deck themselves out for the season, none put on a bigger show than New York's storekeepers, who use everything from social media to 3-D projections to provide "retailtainment."<br /> <br />And each year the stores keep upping the ante.<br /> <br />In 2011, Barney's invited pop sensation Lady Gaga to unveil its holiday windows and this year the store teamed with rapper Jay Z to curate its windows.<br /> <br />Saks Fifth Avenue shut down traffic in front of their store for a show that includes ballet dancers and a light show.<br /> <br />While Bergdorf Goodman's flew acrobats out fourth-floor windows.<br /> <br />Many stores