John Mellencamp played a big part in his pal Matthew McConaughey's wedding to Camila Alves - he sang psalms from the bible during the ceremony.
The Sahara star exchanged vows with Brazilian beauty Alves last weekend(09Jun12) at their home in the actor's native Texas and Mellencamp helped to make the day extra special by reciting Biblical poems to original music.
The Catholic nuptials also included readings from specially-selected Bible passages.
McConaughey tells America's People magazine, "We chose verses from the Bible that moved us and speak to who we are as a couple".
The Hurts So Good hitmaker and his actress girlfriend Meg Ryan weren't the only celebrity guests at the wedding - Woody Harrelson, pregnant Reese Witherspoon, and country star Kenny Chesney were also in attendance.