Katy Perry paid a visit to one of her biggest fans, Grace.
Grace was diagnosed with a brain tumour and couldn't attend Perry's concert because of surgery.
Graces sister wanted to help her, so she reached out to social media to help make her little sisters dream come true.
RETWEET PLEASE! my baby sister is meant to attend @katyperry concert in Adelaide this year but was diagnosed with a 6cm Brain tumour and has been battling all year, grace has love been Katy’s biggest fan since she was 3, please help us try and get in contact with @katyperry xx pic.twitter.com/5C9Xuccmu4— Tiana is trash (@tianamoores_) July 25, 2018
#Helpgracemeetkatyperry 🙏 🙏 🙏— desiree (@betlej_desiree) July 27, 2018
Can you please tweet #HelpGraceMeetKatyPerry my friends little sister is meant to see Katy Perry at a concert but she can’t due to having a 6cm brain tumour, we are trying to get noticed so grace can meet Katy, It would be most appreciated also if you retweet @tianamoores_ tweet— Keely Greenshields (@krtgkry) July 28, 2018
20,000 retweets later and Katy Perry arrived at Graces doorstep!