Tuesday, February 1, 2011 10:41am ET by  
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Katy Perry reveals the promo video for her 'How I Met Your Mother' episode

Katy Perry's recent cameo in U.S hit comedy show 'How I Met Your Mother' is set to air this week, and a promotional video for the episode has been released. 

Star of the show, Neil Patrick Harris, tweeted late last night (January 31):

"CBS just emailed me promos for the Katy Perry ep of HIMYM. Not sure if I'm supposed to tweet 'em yet. Oops."

The episode will air on Monday, February 7 in the U.S with a much later release date expected for the UK. Check out the entertaining promo video below:

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