You probably haven't heard of Harley Bird before, but she's on telly pretty much every day and she's got millions of fans... Confused?
Well, the bubbly 10-year-old is the voice of hugely popular TV character Peppa Pig!
She even bagged herself a Bafta award last year for Best Performer, making her the youngest ever Bafta winner.
Harley takes us behind the scenes of Peppa Pig's offices in her Newsround Press Pack report...