Toby Regbo kept two outfits from the set of 'Reign' - his favorite and least favorite ones. 😅

Mobb Deep's 'Shook Ones' is his go-to karaoke song! 🎤

Callum has been a huge 'Harry Potter' fan since he was little! 🪄

Callum has a dog and loves him dearly! 🐾

Dished on reuniting and working with Brad Pitt! 👀

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