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Kate Hudson's Cassandra July heats up a NYADA classroom in a new clip from "Glee" season 4. The video features the full performance of the dance teacher as she sings a mash-up of Lady GaGa's "Americano" and Jennifer Lopez's "Dance Again". Joined by other dancers, she shows some steamy moves in front of a stunned Rachel Berry (Lea Michele).

Cassandra will make Rachel's days at NYADA a bit tough as she is seen criticizing the former New Directions member in a previously-released video. "Dance is not Rachel's strong point, but as a freshman it's a requirement class she has to take. It will put Rachel in a very vulnerable place, stuck with a teacher [Cassandra] who doesn't make it easy for her," Lea once shared.

"Glee" will return on Thursday, September 13 at 9/8c on FOX with "The New Rachel", which will see the members of New Directions competing amongst themselves to become the next star of the glee club. The episode will also introduce some new faces, Marley (Melissa Benoist), Jake Puckerman (Jacob Artist) and Kitty (Becca Tobin), at McKinley High. Meanwhile, Rachel meets Brody (Dean Geyer), a handsome upperclassman.

In addition to "Americano" and "Dance Again", the upcoming outing will feature the stars covering Carly Rae Jepsen's "Call Me Maybe", The Fray's "Never Say Never", Billy Joel's "New York State of Mind" and Adele's "Chasing Pavements" among others.

Kurt's encounter with Kitty and a glimpse of Brittany, Tina, Blaine and Unique performing "Call Me Maybe" have been shared in other preview videos.