Taylor Swift tweets Valley teen's music video

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By Christina O'Haver By Christina O'Haver

PHOENIX -- A Valley high school student got a shoutout from Taylor Swift after she posted a video of herself lip syncing and dancing to the star's latest hit song on YouTube.

Mackenzie Coffman said she shot her "Shake it Off" lip dub at a local Fry's grocery store on Friday afternoon for fun, and it went viral after Swift tweeted about it.

Swift tweeted, "Just smiled so big as I watched this girl joyously dance-bomb a Whole Foods like a champion."

The video had reached nearly 500,000 views by Thursday evening.

Coffman is a senior at Cactus Shadows High School.