Yet, for two people – his younger-half sister Olivia and his brother, Dylan Efron – he’s known as “big bro.” Zac and Dylan have the same parents – father David Efron and mother Starla ...

Dylan Efron is pleasantly surprised to say that he's the winner of Season 3 of The Traitors — though it's not exactly a shocker to his brother, Zac Efron. Until now, Dylan hasn't been able to ...