Must Watch! Kristen Wiig's Goodbye Serenade on Saturday Night Live (VIDEO)

It was the end of an era last night on Saturday Night Live, as beloved cast member Kristen Wiig said her rumored goodbye to the show with an emotional and unusually poignant serenade from the rest of her cast. Host Mick Jagger introduced the "graduating class" of SNL, giving a special intro to Kristen, before musical guests Arcade Fire played "She's a Rainbow" and "Ruby Tuesday" as each cast member shared a brief dance with her.

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