Gwen Stefani has been supporting Blake Shelton and her pals on The Voice. She is rooting for the show to take down American Idol.

Stefani Backstage At 'The Voice'

Despite the "Hollaback Girl" singer-songwriter not being on camera, Stefani has been backstage at Universal Studios Hollywood rooting on Shelton, Adam Levine, Alicia Keys, and new coach Kelly Clarkson as they filmed several segments for the show. She has also been giving tons of feedback to Shelton and believes that the Oklahoma native's star power has propelled the show to new heights.

According to Hollywood Life, Stefani is nervous about the recently resurrected American Idol. The ABC singing competition has recruited three music superstars to look for the next mega singer. Headlining the show's judging panel are Katy Perry, Lionel Richie, and one of Shelton's longtime friends, Luke Bryan. Despite Shelton being a key factor in helping Bryan secure the job, Stefani still feels anxious about the show.

"Gwen has been keeping a close eye on Katy and all the action on Idol too. Since her time on the show, Gwen has always felt a part of The Voice family and is into all the competition between the singing reality shows. Now she wants to see Blake, Adam, and the rest of The Voice continues to produce the best reality show on TV," said an insider close to the couple to Hollywood Life.

'Idol' Kiss Controversy

As The Voice prepares to air its Battle Rounds, American Idol wrapped up its first week of auditions. However, the show is facing several controversies. One major hullabaloo that riled up fans happened during the reboot's first episode. The "I Kissed A Girl" singer gave hopeful Ben Isaac Glaze his first kiss on the lips during his audition. 

"I was a tad uncomfortable. I wanted to save it for my first relationship. I wanted it to be special," said Glaze to the New York Times.

While many fans cried foul on Perry and labeled Glaze a #MeToo Victim, Glaze stated that he did feel harassed with what happened. 

From 'Idol' To 'The Voice'

Through time, several high-profile alums of the original FOX incarnation of American Idol have jumped on The Voice. This season, the NBC singing competition welcomed the original champion, Kelly Clarkson, to join the coaches. However, Clarkson stated that she would not be watching the ABC reboot because of her busy schedule.

In 2017, The Voice welcomed Oscar-winning singer and American Idol's third season alum Jennifer Hudson to the show. Sadly, all of Hudson's artists were eliminated by the finale.