Musician Lionel Richie tells Fox News Digital the one thing Carrie Underwood shouldn’t do as an "American Idol" judge. Katy Perry left the show after seven seasons. Carrie Underwood's "American Idol" return is 20 years in the making.

The "Before He Cheats" singer was recently tapped to replace Katy Perry on the judges' panel for the 25th season of the hit competition show. During an appearance at SiriusXM's Music Row Happy Hour inside Resorts World Las Vegas, Underwood gave insight on the three ways she plans to fairly judge the contestants. ‘AMERICAN IDOL’ ALUM CARRIE UNDERWOOD REPLACING KATY PERRY AS JUDGE NEXT SEASON Carrie Underwood has a few judging techniques up her sleeves for "American Idol.

" (Chris Polk) "I think I can be honest and constructive, but still kind," she told Buzz Brainard. "I think that's the whole point 'cause people are coming in, and you know ..

. it's dreams." Underwood added, "You're a part of somebody's story from that moment on.

I think it's important to be honest, but I think it's also very important to be kind. Hopefully, I can marry all of those together." ‘AMERICAN IDOL' ALUM CARRIE UNDERWOOD ADMITS THE ‘BIG PROBLEM’ SHE FACES IN NEW ROLE AS JUDGE In 2005, the "Jesus Take the Wheel" singer took home the top prize and won "American Idol.

" Underwood reflected on the two decades since she took a chance on the show, which turned her into one of the biggest country music stars of all time. Carrie Underwood joined Buzz Brainard on Sirius.