Despite reports that Miley Cyrus is dating 20-year-old underwear model Justin Gaston, a Cyrus pal and Miley's rep say it isn't so.

"Miley and Justin are just good friends," said a Cyrus pal. "I doubt her parents would approve of her dating someone five years older than her anyway."

A rep for the 15-year-old "Hannah Montana" starlet confirmed that rumors of a romance between the two are just that — rumors.

Cyrus and Gaston spent Sunday together at church and shopping.

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