The "Beautiful" singer, who came into the finale show without any contestants left to mentor, ended up having a totally starring role when she dressed up as a bunch of her favorite stars and did impersonations of them auditioning for roles as judges on the programme.
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But the amazingly talented mom-of-two took her performance to a whole new level on Tuesday, carrying off her portrayal of her fellow artist so impressively it felt like a Saturday Night Live sketch!
Her totally hilarious dead pan impersonation of Cher, questioning if Adam Levine is her accountant, and who the heck Blake Sheling (Shelton) is, will have you in stitches! Not to mention Shakira's long, endless, intensely serious descriptions of a contestant's performance, and Spears' totally ditzy glee at getting to take a ride in the spinning chair ("Again! Again!").
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Watch the whole amazing sketch in the video above and tell Us: Will Britney think it's funny?!