Oscar nominee Kate Hudson previously showed off her dance moves in the 2009 film adaptation of Nine, and once again the actress is displaying plenty of high kicks and twirls as she joins the cast of Glee. Hudson will guest star on the series' fourth season as Cassandra July, a mentor to Rachel (Lea Michele) at her new performing arts school. Looks like there will be some initial tension between the two ladies, based on a new promo video for the series where Hudson taunts her new crop of students. Take a look below, and catch Glee's season premiere on September 13.