Kate Winslet, Jonathan Groff, Radio City Rockettes

This morning, Kelly and Ryan rock their holiday best for "Live's Holiday Sweater Party," donning a variety of fun and festive sweaters throughout the hour. Their celebrity guests – Kate Winslet ("Wonder Wheel") and Jonathan Groff ("Mindhunter") – also get in on the action. Plus, the world-famous Radio City Rockettes perform for the studio audience.