Céline DionisLady Gaga‘s biggest fan!

The legendary singer, 51, penned a tribute to Gaga in thelatest issue ofTIMEas theA Star Is Bornactress, 33, was honored in the magazine’s annual 100 most influential people list.

In her touching essay, Dion praised Gaga, saying that she has one of the “greatest voices in the world.”

“She’s definitely one of the most inventive artists we’ve ever seen,” Dion wrote. “Her artistic expression has no rules, no boundaries. When she first came on the scene with her outrageous style, she didn’t care what the critics said. She marched to the beat of her own drum, knowing that her message of individuality was a way to express her inner strength.”

The singer continued: “What makes her even more special, and such a powerful influence on society, is that she empowers her fans to adopt the very same values in their lives — to stand up for what they believe in, despite what others might think.”

Michael Tran/FilmMagic; Jeff Spicer/Getty Images

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“Whether it’s her unstoppable support for the LGBTQ community, or her anti-bullying campaigning,Lady Gaga’s voice is being heard where it really counts,” Dion added.

It’s no surprise that the two performers are friends.

In December, Dion was caughtrocking outto Gaga’sEnigmaLas Vegas residency concertin what quickly became a viral video.

According to a speech that Gaga made onstage during the show, the “My Heart Will Go On” chanteuse also joined the headliner behind the scenes before the concert began.

“She inspired my performance,”Gaga said when later asked about the clip. “I watched that video after I did that show, and then the next night when I sang ‘The Edge of Glory’ I was doing all the moves that Céline was doing because she outperformed me while I was singing! She’s an icon! And you know what is so wonderful? She is so kind.”

source: people.com