The nine-year-old North was seen dancing and jumping with her friends across the stage to various beats and tunes, while Katy admitted that she was a huge fan of North and her mother's shared TikTok account, where they can be seen lip-syncing to Perry's biggest hits.
North also told the "Teenage Dream" singer that she wants to be "everything" when she grows up. Katy eventually declared North and another participant the winners of the competition.
While Kourtney Kardashian's 10-year-old daughter, Penelope, was also in Las Vegas with the group, she decided to sit out of the competition.
Kim shared several Instagram-Story videos of herself and North on Sunday, showing the reality star dancing with her friend and daughter when North and her friends joined Perry on stage. The 42-year-old Kim captioned one of the clips, "Dreams do come true."
Earlier in the day, Kim surprised her daughter and her friends with a quick trip to Vegas and treated them to "Kim Air Mocktails," which were named after some of Perry's biggest hits, as well as cotton candy and other sweet treats.
