Why are most disney stars short?

I am not saying each and every single one of them, note that I said most. Most like Zac Efron, he him self said that he is only 5ft8, ashley tisdale, venesa hudgens are around 5ft1. And that guy from Hannah Montanah named Moses or something that plays as rico is also short and the one from wizards of waverly place (Austin or something) is also short. Dylan sprouse and his twin brother, if they are 16 years old, then they are also relatively short. So why are most disney stars short? now please do not start giving the names of tall ones, if there are any, because I did not ask why are all of disney stars short, I asked most. the tall ones are much less in number.