Carrie Underwood Fangirls Hard After Singing 'Happy Birthday' to NKOTB's Danny Wood and Jordan Knight

| Celebrity

#NKOTB and me!

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Carrie Underwood attended the New Kids on the Block, Boyz II Men and Paula Abdul concert in Nashville Wednesday night, and the country star got a special surprise when she was invited onstage to sing "Happy Birthday" to NKOTB members Danny Wood and Jordan Knight.

The group was performing during their Total Package tour when Underwood joined them onstage, a moment she later geeked out over on Twitter.

"Um...did I just sing happy birthday to @dannywood and @jordanknight on stage with the NEW KIDS ON THE BLOCK?!?!" she wrote. "Yup!"

MORE: Carrie Underwood Reunites With Former 'American Idol' Judge Paula Abdul

The star also posted several videos from the night on Instagram, including a clip of NKOTB's performance of "Step By Step."

"Still got it!" she wrote.

Still got it! #NKOTB

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She also shared a clip of Boyz II Men performing, joking that she was back in the 6th grade again.

And I'm instantly back in 6th grade...right @jordanvandiver ? Ha ha!

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Photo Credit: Twitter / @etnow

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