WATCH: Go behind-the-scenes on the all-new "Makeover" episode of GLEE

Sarah Jessica Parker (“Sex and the City”) Guest-Stars

GLEE: Pictured L-R: Harry Shum Jr., Jenna Ushkowitz, Mark Salling, Heather Morris, Chord Overstreet, Amber Riley, Melissa Benoist, Jacob Artist, Kevin McHale, Jane Lynch, Matthew Morrison, Darren Criss, Becca Tobin, Chris Colfer, Naya Rivera, Cory Monteith, Lea Michele and Dean Geyer.

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By FOX50.com

Story Created: Sep 26, 2012 at 1:49 PM EDT

Story Updated: Sep 27, 2012 at 9:41 AM EDT

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The campaign showdown begins when Brittany and Blaine go head-to-head for Student Council President. Meanwhile, Kurt gets the internship of his dreams on an all-new “Makeover” episode of GLEE airing Thursday, Sept. 27 (9:00-10:00 PM) on FOX 50. (GLE-403) (TV-14 L)

Cast: Matthew Morrison as Will Schuester; Jane Lynch as Sue Sylvester; Lea Michele as Rachel Berry; Cory Monteith as Finn Hudson; Chris Colfer as Kurt; Kevin McHale as Artie; Amber Riley as Mercedes; Mark Salling as Puck; Jenna Ushkowitz as Tina; Naya Rivera as Santana Lopez; Heather Morris as Brittany; Darren Criss as Blaine Anderson; Chord Overstreet as Sam Evans; Jayma Mays as Emma Pillsbury; Mike O’Malley as Burt Hummel.

Guest Cast: Sarah Jessica Parker as Isabelle Klempt; Vanessa Lengies as Sugar Motta; Samuel Larsen as Joe Hart; Jacob Artist as Jake Puckerman; Melissa Benoist as Marley Rose; Dean Geyer as Brody Weston; Becca Tobin as Kitty; Iqbal Theba as Principal Figgins; and Alex Newell as Wade Adams.

BONUS CLIP: Kurt meets a fellow Ohioan, Isabelle (Sarah Jessica Parker) at Vogue.