Katy Perry

A source says Underwood was not producers' first choice.

Surely that's not Luke's fault ... right?

Luke Bryan discusses Katy Perry's exit from American Idol, highlighting their ongoing and growing friendship.

After viewers criticized Katy Perry's comments, the contestant offered her perspective on social media.

He's the resident country expert on 'American Idol.'

They served up a soaring rendition of their pop-leaning duet.

Rhett and Perry come together in this music video for an abstract, cinematic visual interpretation of their duet.

Host Ryan Seacrest will also return for Season 21.

She says she may get back to her singer-songwriter roots.

It's the first time the song has been performed live.

The show will go on.

Scrolling through my Facebook feed this morning, I saw a post from Cosmopolitan Magazine with the headline, "Gigi Hadid Explains What Motivates the Taylor Swift Squad." Now, I see a ton of coverage surrounding Taylor Swift's friends, but this particular post caught my eye when I saw an interesting comment from a reader...