CELEBRITY
07/12/2013 05:20 pm ET

The Definitive List Of Celebrity Appearances On 'Glee'

AP

Surprise, surprise.

Ryan Murphy recently spilled the newest "Glee" addition: "American Idol" alum Adam Lambert.

His affinity for casting "Glee" guest stars has grown each season to the point where cameos are commonplace.

Having trouble remembering Season 1's special appearances? Browse our definitive list of celebrities who upstaged the Gleeks on their own turf.

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BEFORE YOU GO
Celebrity Guest Stars on Glee
PHOTO GALLERY
Celebrity Guest Stars on Glee

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