Who's who in country music continues to join George Strait on stage during his 'Cowboy Rides Away' tour. This past weekend Ronnie Dunn opened for Strait in Iowa and Oklahoma. Dunn not only joined the King to sing 'You Look So Good in Love' and 'Amarillo By Morning,' he also took a #cowboyselfie to remember the moment.

Several other stars have joined Strait on his Cowboy Rides Away tour including Jason Aldean, Eric Church, Miranda Lambert, Kenny Chesney, Vince Gill, Martina McBride and Alan Jackson.

Strait's final show is set for June 7th in Dallas, Texas and you can win a trip to be there.