Cassandra (guest star Kate Hudson, R) performs in “The New Rachel,” the Season Four premiere episode of ‘Glee.’ (Courtesy of Fox)

L-R: Unique (guest star Alex Newell), Brittany (Heather Morris), Tina (Jenna Ushkowitz) and Blaine (Darren Criss) ask Artie (Kevin McHale, bottom) to pick one of them as the next glee club star in “The New Rachel,” the Season Four premiere episode of ‘Glee.’ (Courtesy of Fox)

Blaine (Darren Criss, L) and Kurt (Chris Colfer, R) hang out in “The New Rachel,” the Season Four premiere episode of ‘Glee.’ (Courtesy of Fox)

Marley (Melissa Benoist) is a new member of the glee club in “The New Rachel,” the Season Four premiere episode of ‘Glee.’ (Courtesy of Fox)

Will (Matthew Morrison, L) introduces a Marley (Melissa Benoist, R) as a new member of the glee club. (Courtesy of Fox)

Rachel (Lea Michele) performs in “The New Rachel,” the Season Four premiere episode of ‘Glee.’ (Courtesy of Fox)

Rachel (Lea Michele, R) takes a dance class from Cassandra (guest star Kate Hudson) at NYADA in the “The New Rachel,” the Season Four premiere episode of ‘Glee.’ (Courtesy of Fox)

(Courtesy of Fox)

Becca Tobin as Kitty (Courtesy of Fox)

Melissa Benoist as Marley (Courtesy of Fox)

Kate Hudson as Cassandra (Courtesy of Fox)

Naya Rivera as Santana (Courtesy of Fox)

Chris Colfer as Kurt (Courtesy of Fox)

Matthew Morrison as Will (Courtesy of Fox)

Cory Monteith as Finn (Courtesy of Fox)

Lea Michele as Rachel (Courtesy of Fox)

Harry Shum Jr. as Mike (Courtesy of Fox)

Amber Riley as Mercedes (Courtesy of Fox)

Heather Morris as Brittany (Courtesy of Fox)

Jenna Ushkowitz as Tina (Courtesy of Fox)

Mark Salling as Puck (Courtesy of Fox)

Jane Lynch as Sue (Courtesy of Fox)

Kevin McHale as Artie (Courtesy of Fox)

Chord Overstreet as Sam (Courtesy of Fox)

Dean Geyer as Brody (Courtesy of Fox)

Jacob Artist as Jake Puckerman (Courtesy of Fox)