Former supermodel Christie Brinkley will make her Broadway debut this Friday, starring as Roxie Hart in “Chicago.” Accordingly, she stopped by “Good Morning America” today to give the nation a sneak preview of her dance moves. Brinkley, by the way, is 57. You heard me: 5-7.

After watching, I suspect you will empathize with Elizabeth Vargas, who said during the dance demo: “Note to self: Never stand next to Christie Brinkley.”