If you've ever been lucky enough to be close to the stage during one of your favorite artist's performances, and said artist actually notices you getting your groove on, and waves...well, as it turns out, you know just how Carrie Underwood felt Saturday (June 29) when she was given a friendly nod from Janet Jackson.

The two superstars were in the UK for the multi-genre Glastonbury Festival. Underwood is an A-list performer at the fest herself, but that didn't stop her from totally watching and stanning Jackson's moves on stage. When Jackson appeared to notice her and give a wave, Underwood was delighted.

"What? Just? Happened?!" she posted on Instagram, adding kiss-face and "mind-blown" emojis. Clearly Underwood's fame has not resulted in her losing the all fun of being a fan!

There were plenty of other acts for the singer to enjoy before and after her Saturday set, including the Killers, the Cure, Kylie Minogue, Miley Cyrus, Lauryn Hill, Janelle Monaé, Billie Eilish, Hoziez, Wu-Tang Clan and more.

Sunday (June 30) is the last day of Glastonbury 2019, which takes place in Pilton, Somerset, England. Underwood will be performing several other dates in the UK, wrapping up in London July 4. She'll then continue in the U.S. with her Cry Pretty 360 Tour with dates scheduled through October.

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