HE recently smashed the world record for the fastest time to reach one million Instagram followers after sharing a selfie with his adorable baby daughter on the site.
But Harry Potter star Rupert Grint isn't the only cast member bewitching fans on the social media platform. Experts have revealed actors from the films can net a quid-ditch or two (or tens of thousands) per post - leaving them needing their own vault in wizarding bank Gringotts.
New research by OnBuy Movies reveals Rupert's co-star Emma Watson could earn up to £184,000 for a single sponsored Instagram post thanks to her nearly 60million followers.
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