Former Victorious star Leon Thomas just made the big announcement that he wrote Zendaya and Chris Brown's new track aptly titled "Something New." This got us thinking – how many of our favorite stars have written songs for other artists?

From stars like Liam Payne to Ed Sheeran, some of your favorite celebs have penned tracks that are majorly popular, and you might have had no idea!

Click through the gallery to be shocked by 10 stars who wrote songs for other artists!

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