Carrie Underwood Fangirls Over Janet Jackson

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Carrie Underwood got to remember what it feels like to be a fan during her UK visit over the weekend to perform at the Glastonbury Festival. On Saturday (June 29th), Carrie was sitting sidestage watching -- and videotaping -- Janet Jackson's performance and Janet waved and blew her a kiss. Carrie shared the video on social media writing, "What? Just? Happened?!" along with kiss-face and mind-blown emojis.

Carrie continues performing in the UK, wrapping things up in London on Thursday (July 4th).

Her Cry Pretty 360 Tour resumes in the U.S. in September.