The Broadway blockbuster Wicked turns 10 on October 30, and as Glinda says, “Oh what a celebration we’ll have today!” The cast kicked off the festivities surrounding the musical’s landmark anniversary with a special appearance on The Today Show. The show’s stars Lindsay Mendez and Alli Mauzey took the stage at Rockefeller Center to perform Wicked's comical duet “What Is This Feeling,” in which Oz’s misunderstood green witch Elphaba (Mendez) realizes she’ll be boarding at school with the perky, blonde and popular Glinda (Mauzey). Watch Mendez and Mauzey’s dazzling early morning performance in the video below, and check back with Broadway.com for complete coverage of Wicked’s milestone 10th anniversary bash at the Gershwin Theatre.