A-list stars attend Katy Perry's final Las Vegas show

Celine Dion, Meghan Markle, and Prince Harry made a surprise appearance at the final concert of Katy Perry's Las Vegas residency. 

The 'Firework' star wrapped up her two-year long 'Play' residency at the weekend, and many of her famous friends showed up to support her. Fans were excited to see Celine, who has been on a hiatus for health reasons, out and about. 

The 55-year-old was pictured smiling and chatting to concertgoers. Her rare public appearance has sparked hope that she will resume her own shows in the near future. 

Celine announced late last year that she has a rare neurological disorder called "stiff-person disorder".  The disorder causes spasms. 

"Unfortunately the spasms affect every aspect of my daily life, sometimes causing difficulties when I walk and not allowing me to use my vocal cords to sing the way I’m used to. I have a great team of doctors working alongside me to help me get better and my precious children who are supporting me and giving me hope. I’m working hard with my support medicine therapist every day to build back my strength and my ability to perform again, but I have to admit it’s been a struggle," she said.

The 'My Heart Will Go On' singer was forced to postpone several of her concerts. 

ALSO READ: Celine Dion's sister gives update on the star's health

Harry and Meghan were spotted in the audience dancing to several songs. 

The Duke and Duchess of Sussex, who were both dressed in black, sang along to as Katy performed her hit single, 'Roar'.

Meghan's close friend Misha Nonoo also tagged along. 

Katy became friends with the royals after they moved to California in 2020. The singer and her husband, Orlando Bloom, live "just down the road" from their Montecito mansion.

ALSO READ: 'Harry and Meghan' docu-series makes Netflix history

Zoe Saldana, Cameron Diaz and her husband, musician Benji Madden, were also in attendance. 

Katy's daughter, three-year-old Daisy, did not miss out on her mom's important weekend.

She wore a red dress with white polka dots for the show. Katy gave her a special shout out during the show. 

"Daisy, I love you so much. You’re my best friend and I’m so glad you’re here," she said. 

ALS READ: Jordin Sparks is back with a bang(er)

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Main image credit: Instagram/@katyperry