Katy Perry responds to conspiracy theory that JonBenet Ramsey was never killed and grew up to be the superstar singer

The 40-year-old singer reacted to a post on Instagram that claimed to show the time-lapse growth of JonBenet Ramsey into Katy Perry .

Ramsey was the beauty queen who was murdered in her home in 1996 when she was just 6 years old .

The post has more than 5,000 comments and hundreds of replies.