The father of the bride, David White, managed to persuade the country star to make a brief appearance at his daughter's nuptials, and perform.
The newlyweds and fellow guests were stunned when McGraw stepped out onstage at the Vie venue dressed in a classic black tux, and serenaded them with a few songs, including fan favourite "Live Like You Were Dying", reported Contactmusic.
One member of the wedding party posted footage of McGraw's sing-along performance on Instagram and added the hashtag caption "#asgoodasitgets".
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