Katy Perry, Lionel Richie, Luke Bryan & Ryan Seacrest Celebrate the 20th Season of 'American Idol'!

American Idol judges Katy Perry, Lionel Richie and Luke Bryan are toasting the 20th season of the show! The trio celebrated the show’s fifth season on ABC and the 20th season overall with a special cake-cutting event in Los Angeles on Sunday (October 17). Click inside to see all the photos… They were joined by [...]