"Joe Jonas is set to guest star on <i>Brothers and Sisters</i> One of the popular Jonas Brothers is coming to the small screen on a popular CBS drama. According to E! Online, Joe Jonas will appear as a guest star on Brothers and Sisters in a special two-episode arc.

It was said that Jonas would portray the younger version of Balthazar Getty's Tommy Walker in flashback episodes that will delve into the Walker family's history. The site also reported that Rachel Leigh Cook has auditioned to guest-star on the two-episode arc as the younger version of Sally Field's Nora Walker, but the part hasn't been cast yet.

The site is also reporting that Kay Panabaker will play a younger version of Calista Flockhart's Kitty Walker, Anna Wood will play a younger Sarah (Rachel Griffiths) and Kasey Campbell will play a younger Kevin (Matthew Rhys).

It wasn't clear when this two-episode arc would air.