Kayla Harrison is just two days removed from winning her first-ever UFC championship after a dominant performance over Julianna Peña ... but she's already back in the gym, where she received a welcome worthy of a champ!
The newly crowned UFC women's bantamweight title holder brought her new hardware down to her training grounds at American Top Team in Florida ... where Kayla's coaches, training partners, and gymmates, including Dustin Poirier, lined up to congratulate the champ.
Harrison made sure to thank everyone, even taking a moment to hug the videographer filming her triumphant return.