Photo Flash: Chenoweth, Harris & More - AMERICAN IDOL Guest Judges Sneak Peek

Katy Perry and Avril Lavigne will join AMERICAN IDOL as guest judges during the final two days of auditions in Los Angeles. On their respective days, Perry and Lavigne will sit at the judges' table next to Simon Cowell, Randy Jackson and Kara DioGuardi while the final group of singing hopefuls tries for a "Golden Ticket" to Hollywood.

Victoria Beckham served as a guest judge in Denver and Boston, Mary J. Blige shared her expertise in Atlanta, Joe Jonas and Neil Patrick Harris guest-judged in Dallas, Kristin Chenoweth joined the panel in Orlando and Shania Twain sat at the judges' table in Chicago.

You can check out a sneak peek of their appearances right here on BWW!

AMERICAN IDOL is created and executive-produced by Simon Fuller, founder of 19 Entertainment; and executive-produced by Cecile Frot-Coutaz, CEO, FremantleMedia North America; and Ken Warwick, executive producer, FremantleMedia North America. The series features host Ryan Seacrest and judges Simon Cowell, Randy Jackson, Kara DioGuardi and Ellen Degeneres.

For more AMERICAN IDOL news visit, www.americanidol.com.

Simon Cowell, Kara DioGuardi, Kristin Chenoweth and Randy Jackson

Randy Jackson, Neil Patrick Harris, Kara DioGuardi, and Simon Cowell

Randy Jackson, Joe Jonas, Kara DioGuardi, and Simon Cowell

Randy Jackson, Kara DioGuardi, Katy Perry and Simon Cowell

Randy Jackson, Victoria Beckham, Kara DioGuardi and Simon Cowell

Simon Cowell, Shania Twain, Randy Jackson and Kara DioGuardi

Randy Jackson, Kara DioGuardi, Mary J. Blige and Simon Cowell

Randy Jackson, Kara DioGuardi, Avril Lavigne and Simon Cowell