Dylan Efron opened up about the relationship between him and his younger half-siblings while speaking to Amanda Hirsch on the ...

Case in point: that time Ashley Tisdale’s young daughter thought Zac Efron was her father while watching HSM. Throughout the ...

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 ...

And she thought Zac Efron was her dad ... Though, if Tisdale's daughter is confusing Efron with her real father, it might be best to wait a few more years before sitting down for a High School ...