Kim Kardashian’s nine-year-old daughter North West was brought on stage by Katy Perry during the pop star’s Las Vegas residency PLAY at Resorts World on Saturday night.

An eyewitness told DailyMail.com that Katy, 38, hosted a ‘walk off competition’ for her Firework Foundation and ‘invited North West onto the stage’ to participate.

‘While on the stage North asked if her friends could join her and Katy obliged,’ they revealed.

Proud mom Kim, 42, was quickly escorted to the front row to watch North and her pals dance with the Teenage Dream hitmaker, as shown in photos obtained by DailyMail.com.

‘People cheered when they saw Kim supporting North with the crowd going wild,’ a concertgoer revealed.

Also rooting for the young ladies were Paris Hilton and Sia, who ‘spent the evening singing and dancing along to every song.’

The eyewitness added: ‘Interestingly Paris’ husband Carter [Reum] had ear plugs in for the entire show but still managed to dance along with his wife.’

After careful consideration, Katy crowned both North and another talented participant as the winners of the ‘walk off.’

The Roar singer, who was dressed in an elaborate stage costume, ‘rewarded them with pizza pies’ before they were escorted off stage.

While speaking with North, Katy confessed that she’s a ‘huge fan’ of the TikTok account she shares with Kim, where she often lip-syncs Katys songs.

But no one was a bigger fan of North than Kim, who looked sensational in a skintight red look for her evening out with North and her pals.

DailyMail.com’s eyewitness gushed over Katy’s residency, which will come to a close in November.

‘Katy’s show at Resorts World is phenomenal. Everyone is up singing and dancing,’ they said.

Just hours before showtime, Kim revealed on her Instagram Story that she’d ‘surprised’ North with the trip.

‘I surprised the girls with going to the @katyperry concert! I think I’m more excited than anyone,’ captioned the SKKN by Kim CEO.

She took North and her friends on her private jet, which she refers to as ‘Kim Air.’

Waiting for the girls was a menu of Katy Perry-themed ‘mocktails’ named after some of the singer’s biggest hits.

The ‘Firework’ drink featured cotton candy and strawberry soda, while the ‘California Gurls’ cup had a mix of lemonade and lemon lime soda.

Last but not least was the ‘Roar’ drink, which was made up of pineapple juice, ginger ale and sparkling cider.

While also being a big fan, Kim has formed a close friendship with Katy over the years.

The Grammy Award nominee previously referred to her self as a ‘secret Kardashian.’

Katy collaborated with Kim’s now ex-husband Kanye West in 2011 — just one year before Kim began dating the 45-year-old rapper.

Kim and Katy were captured being buddy-buddy in 2015 as they both attended Givenchy’s runway show during that year’s Paris Fashion Week.

In 2017, Katy invited Kim and North to attend her Witness World Tour show in Los Angeles. They posed for a selfie with the singer backstage before the concert.

The snap was taken on the same day Taylor Swift, who was feuding with both of them at the time, released her sixth studio album Reputation.

They’ve also mingled at past Met Galas, with Kim revealing in 2018 that Katy actually flew her nails to her via private jet so she’d have them for her look that year.

Last year, Katy and Kim mingled with one another during Kim’s sister Kendall Jenner’s 818 Tequila launch party in Los Angeles.

While Kim was still dating Pete Davidson, Katy playfully revealed that she was not at all attracted to the 29-year-old comedian during a game of M.A.S.H. on TikTok.

Soon after, the Firework hitmaker apologized to the SKIMS founder and sent her a pair of shoes from her shoe line Katy Perry Collections.

Kim shared a snap of the heels to her Instagram Story, which included a note from Katy that read: ‘If the shoes fit wear it!’

In a new interview with Out, the pop star revealed she is planning on heading out on on tour once she wraps up her PLAY residency at Resorts World in Las Vegas.

‘I know there’s a lot of people who couldn’t make it to Vegas,’ Perry, 38, explained of her interest in taking her show out into the world.

‘The last time I was on tour was in 2018. I’m… due. How about that? I’m due to go out and see the kids that couldn’t make it to Vegas.’

While the Santa Barbara, California native confessed she’s ‘proud of the show,’ it turns out it’s not technically possible to cart around’ all the elaborate set pieces and costumes.’

‘It is such a spectacular show that we love so much,’ she added. ‘It’s almost like the greatest hits show! I call it all thriller, no filler. I wish I could bring it to the rest of the world.’

The Firework star continued, ‘Closing a chapter on PLAY allows me to start a new chapter. I’m so excited for the potential of my story to continue.’

Part of the lure of performing for fans, via the residency, is that it offers Perry a more consistent home life now that she’s a first-time mother to two-year-old daughter, Daisy, whom she shares with fiancé Orlando Bloom.

‘I get to literally drop [my daughter] off at preschool and then go play a show in Las Vegas,’ she said on her work-life balance to Extra on the red carpet for the 2022 CMA Awards.

‘I come back late, like maybe 11:30 or something. I still make her lunches.’

Perry kicked off PLAY at Resorts World Las Vegas on December 29, 2021, and has since done short stints throughout 2022 and into 2023.

Inspired by the looks of Honey, I Shrunk the Kids, Pee-wee’s Playhouse and Pee-wee’s Big Adventure, the songstress described the show as ‘larger than life’ and ‘the kookiest, most camp show I’ve ever put together.’

Consisting of a set of 19 songs, including E.T., Dark Horse, California Gurls, Waking Up in Vegas, I Kissed a Girl, Never Really Over, Teenage Dream, Roar and the show-stopping Firework. PLAY would go on to receive critical acclaim.

The show picked back up for a sixth leg of her stay in Sin City on February 15, 2023, with more shows in April, May, July, August and October, before wrapping up the show on November 4.