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A video posted by Selena Gomez (@selenagomez) on

So sweet!

Just before her concert in Louisville, Kentucky this week, Selena Gomez took part in an impromptu dance-off Wednesday with an adorable 7-year-old girl named Audrey Nethery, a Zumba dancing Internet sensation with Diamond-Blackfan anemia, a rare bone marrow disease.

"Finally got to meet this sweetheart," Gomez wrote on Instagram, alongside a video of the two. "She owned it fully."

Audrey's father, Scott Nethery, and his daughter appear super pumped to meet Gomez in a video posted on the Facebook page of local radio station 99.7 WDJX.

"We are getting ready to go into the Selena Gomez meet-and-greet. Are you excited?" he asks Audrey.

"Yeah!" the little girl responds.

"Audrey, this is gonna be so cool," he says. "You know how big of a fan I am of Selena Gomez?"

"No," she says.

"I can't sing as good as her, like you," he says. "But I love her. She's sweet. This is gonna be so fun, right?"

"Yeah!" she says.

He then gets Audrey to say, "Selena, we're coming to get it!"

Audrey's dad has posted many videos of her dancing and singing, including one of her taking on Gomez's 2011 song "Love You Like A Love Song Baby."

Before she got to meet Gomez, Audrey got her hair dyed for the big event.

The group was also joined by Audrey's mother, Julie Haise.

She had helped make the little girl a Zumba-dancing Internet sensation last year when she uploaded a video of her daughter performing a routine to Facebook. Audrey was then invited to perform at an international Zumba convention in Orlando, Florida.

"When she's not doing Zumba, she's singing and dancing and there was a lot of singing and dancing going on after that call," Haise told NBC's Today show. "Every time I see her dance, even when it's just in her class, it makes me cry, but seeing her up on that stage was incredible...when she's dancing, she's happy and brings so much joy to everyone watching."

Audrey was diagnosed with Diamond-Blackfan anemia when she was a baby.

People with the condition, which can be inherited, often experience symptoms such as fatigue and weakness and many also have physical disorders, such as microcephaly, cleft palates and glaucoma. Some patients are also unusually short for their age. People with the disease also have an increased risk of developing certain types of cancers. Treatment includes corticosteroids, blood transfusions, a bone marrow transplant or stem cell transplantation.