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21 times celebrities unexpectedly appeared on your favorite TV shows

INSIDER Logo By Anjelica Oswald of INSIDER | Slide 1 of 22:  Television shows provide numerous outlets for some perfectly unexpected celebrity cameos. Whether stars are playing themselves, like Kris Jenner on "The Mindy Project," or are showing their acting chops, like Britney Spears on "How I Met Your Mother," it's always a joy to recognize a celebrity on your favorite show. Here are 21 unexpected guest appearances made by celebrities on TV.

Television shows provide numerous outlets for some perfectly unexpected celebrity cameos.

Whether stars are playing themselves, like Kris Jenner on "The Mindy Project," or are showing their acting chops, like Britney Spears on "How I Met Your Mother," it's always a joy to recognize a celebrity on your favorite show.

Here are 21 unexpected guest appearances made by celebrities on TV.

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