(CNN) —  

Grab your Kleenex.

Gwen Stefani was in the middle of her concert in West Palm Beach, Florida, when she was handed a poster that read, “My son was bullied from first to fifth grade. He would come home every day upset, but he’d go to his room, listen to your music and smile.”

Stefani was visibly moved and immediately invited the young boy on stage: “Get up here right now, right now,” she said.

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The crowd erupted with cheers as he made his way to the stage and jumped into her arms. The boy burst into tears as Stefani whispered something into his ear and embraced him with a hug. The Grammy-winner took to Instagram following the concert and said she has “zero tolerance” for bullying.

“About 3 years ago when things were hard in my life I prayed to God everyday that I could get a chance to use my gift that God gave me and make a difference in some way in this world,” she wrote. “Last night this little guy was the answer to my prayers #zerotoleranceforbullies #onelove #thisiswhatthetruthfeelslike Gx.”

Stefani is currently in the midst of her “This Is What The Truth Feels Like” tour, and her next concert is July 29 in Alpharetta, Georgia.