Shiri Appleby, Bethany Joy Galeotti Shiri Appleby, Bethany Joy Galeotti

The worlds of CW dramas Life Unexpected and One Tree Hill will collide in a special crossover episode, a rep for the series confirms.

Life Unexpected creator Liz Tigelaar: "Cate and Baze aren't over"

One Tree Hill starlets Haley (Bethany Joy Galeotti) and Mia (Kate Voegele) will appear in the Oct. 12 episode of Life Unexpected, in which they'll perform at a music festival sponsored by Cate and Ryan's radio station. Entertainment Weekly first reported the news.

Life Unexpected moves to Tuesday nights this fall following One Tree Hill.

Watch full episodes of One Tree Hill

New seasons of both shows premiere Tuesday, Sept. 14.

What do you think of this crossover?