Sophia Bush and Austin Nichols are getting married ... on TV.

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The couple, who are actually dating in real life, will tie the knot on their CW show "One Tree Hill" -- and it looks like one gorgeous affair.

In new photos, posted over at TVLine, Bush looks absolutely stunning in a strapless wedding dress next to the dapper Nichols.

The nuptials for "Brooke" and "Julian" will air next week. Wonder if shooting this episode gave Austin and Sophia any ideas ...