Sister sister! You've never seen a nun shut it down like this one.

The judges of singing competition "The Voice of Italy" couldn't believe their ears when they heard Sister Cristina Scuccia belting out Alicia Keys' "No One," but they were in for a greater shock when they saw what Scuccia looked like.

Judges begin the show with their backs to the stage, and if they like what they hear they can swivel their chairs around-- but none of them were prepared for the sight of 25-year-old Scuccia, a member of the Ursuline Sisters of the Holy Family, delivering a jaw-droppingly good performance in her black habit and silver cross. As the crowd cheered, her fellow sisters jumped up and down in delight.

The shocked and impressed judges asked her if she was really a nun, to which she replied, "Yes, I am truly, truly, a sister."

A native of Sicily, she arrived at the show accompanied by four sisters from her community as well as her parents. “I came here because I have a gift and I want to share that gift. I am here to evangelize,” she said, reports Catholic News Agency.

"If I had found you at Mass I would always be in church," said J-Ax, an Italian rapper who is one of the judges. "You and me are like the devil and holy water."

She trended on Twitter after her unbelievable performance, with many Italians showing their love for "#suorcristina."

The judges asked her what the Vatican would think of her singing, to which she replied, "I hope that Pope Francis will call me now," according to NY Daily News.

We can't wait to see more of this sister act!

Make sure to select the closed caption "CC" button for English subtitles.