Celebs Go Glee!
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![Britney spears](https://www.intouchweekly.com/wp-content/uploads/2014/02/britney-spears.jpg?fit=600%2C600&quality=86&strip=all)
Adam Rose/FOX
It’s Britney, bitch. Ms. Spears made a cameo on Glee’s Britney/Brittany episode, where she appeared in one of Brittany Pierce’s anesthesia-induced fantasies.
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![Gwenyth paltrow](https://www.intouchweekly.com/wp-content/uploads/2014/02/gwenyth-paltrow.jpg?fit=600%2C600&quality=86&strip=all)
Adam Rose/FOX
She was the adult all of the William McKinley High students loved! Gwyneth played substitute teacher Holly Holliday and urged the glee club to sing songs they were excited about.
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![John stamos](https://www.intouchweekly.com/wp-content/uploads/2014/02/john-stamos.jpg?fit=600%2C600&quality=86&strip=all)
Adam Rose/FOX
John Stamos gave Will Schuster a run for his money when his dentist character Carl Howell swept Dr. Schue’s love Emma right off her feet. What a dreamy doctor!
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![Kate hudson](https://www.intouchweekly.com/wp-content/uploads/2014/02/kate-hudson.jpg?fit=600%2C600&quality=86&strip=all)
Adam Rose/FOX
Kate Hudson has stolen the show this season as Rachel’s evil NYADA dance teacher, Cassandra July. She may be mean, but boy can she sing like Gaga and dance like J. Lo!
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![Neil patrick harris](https://www.intouchweekly.com/wp-content/uploads/2014/02/neil-patrick-harris.jpg?fit=600%2C600&quality=86&strip=all)
Adam Rose/FOX
For his role as Will Schuester's high school glee club nemesis Bryan Ryan, Neil Patrick won an Emmy for his short-lived Glee appearance. Oh, and did we mention the duo’s rendition of “Dream On” is out of this world?
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![Ricky martin](https://www.intouchweekly.com/wp-content/uploads/2014/02/ricky-martin.jpg?fit=600%2C600&quality=86&strip=all)
Adam Rose/FOX
The sexy latin singer and father of two played David Martinez, Glee’s night teacher turned Will Schuester’s replacement … but that didn’t last long. Sorry, Ricky!
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![Sarah jessica parker](https://www.intouchweekly.com/wp-content/uploads/2014/02/sarah-jessica-parker.jpg?fit=600%2C600&quality=86&strip=all)
Adam Rose/FOX
The fashionable Sex and the City star plays Vogue.com editor Isabelle, who gives Kurt and Rachel a crash course in style and in life. We heart SJP.