Just before "Wicked" flies away to the next city, Chicago will experience a new Glinda and Madame Morrible as Jenn Gambatese and Kim Zimmer depart the national tour.

Beginning on Dec. 16, Gina Beck, a British actress who played Glinda in the West End, makes her US debut in the role here in Chicago, while Broadway actress Alison Fraser takes over as Madame Morrible. The national tour of "Wicked" plays the Oriental Theatre through Dec. 21.