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Katy Perry performs surprise gig for fan recovering from brain surgery

After an operation on her brain, Grace couldn't make the gig she'd been looking forward to all year - so Katy brought it to her.

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'I get to use my powers for good'
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Katy Perry made a sick fan's day when she turned up unannounced to play a gig in her living room.

Eight-year-old Grace Moores, who had recently undergone surgery for a brain tumour, thought she was going to have to miss the concert.

A selfie with a popstar for Grace
Image: A selfie with a popstar for Grace

She was diagnosed with a brain tumour in April.

The Australian KatyCat, who has been a Perry fan since she was three, had been given the tickets for her birthday more than a year ago.

However, a social media campaign started by Grace's older sister Tiana - using the hashtag #helpGracemeetKatyPerry - brought the young fan's plight to the popstar's attention.

The original post received more than 21,000 retweets.

Perry, 33, posted a video of her visit, during which she performed her hit song Firework at Grace's flat in Adelaide, titling it "The Power Of The Internet".

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Perry tells fan that her mum's nickname for her is turtle
Image: Perry tells fan that her mum's nickname for her is turtle

She told fans: "Today is one of those days when I actually feel like a unicorn. That's because I get to use my powers for good.

"I'm going to meet someone called Grace who wasn't able to come to the show. And so I just figured… we'd bring the show to her."

In the video, Grace's sister also shows her own closely cropped hair, which she shaved to raise $2,100 Australian dollars (£1,184) for her sibling.