Carrie Underwood made her acting debut on How I Met Your Mother back in 2010, and she made sure to tune in for the show's series finale Monday night on CBS.
She tweeted Monday afternoon, "I feel like 5 of my friends are moving away & I'll never seen them. Been a great 9 seasons!"
Carrie will have the chance to make some new friends when the How I Met Your Mother spinoff, How I Met Your Dad , premieres later this year on CBS.
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